# Why is the number 1729 special?

The number 1729 is considered to be a special number for a few different reasons.

Firstly, it is known as a Hardy-Ramanujan number, named after the two mathematicians G.H. Hardy and Srinivasa Ramanujan. In 1917, Hardy visited Ramanujan in hospital and mentioned that he had travelled by taxi with the somewhat dull number 1729. Ramanujan swiftly replied that it was in fact quite an interesting number, because it was the smallest number that could be expressed as the sum of two positive cubes in two different ways. In other words: 1729 = 1^3 + 12^3 = 9^3 + 10^3. This property is known as being a taxicab number and there are only few known cases.

In addition to its taxicab number status, 1729 is also a Carmichael number. This means that it is a composite number that satisfies a certain condition (namely, that for any integer coprime to 1729, when raised to the power of 1728 and divided by 1729, the remainder is always 1). Carmichael numbers are rare and interesting in themselves, so 1729 being one just adds to its specialness.

Furthermore, 1729 appears in a sequence of numbers related to the decimal expansion of e (which is approximately 2.71828). Specifically, 1729 appears as a coefficient in the Maclaurin series expansion of e^(1/60). While this might not seem like a particularly significant property, it is remarkable that such seemingly different mathematical concepts can be linked in this way.

While 1729 may not be a particularly well-known number to the general public, it has a few mathematical properties that make it noteworthy and worthy of recognition among mathematicians.

## Is 1729 the only Ramanujan number?

The answer is no, 1729 is not the only Ramanujan number. A Ramanujan number, named after the famous Indian mathematician Srinivasa Ramanujan, is a positive integer that can be expressed as the sum of two positive cubes in two different ways. For example, 1729 is a Ramanujan number because it can be expressed as the sum of two positive cubes in two different ways:

1. 1729 = 1^3 + 12^3
2. 1729 = 9^3 + 10^3

However, there are many other Ramanujan numbers, and they have been discovered by various mathematicians over the years. Some examples of Ramanujan numbers include:

1. 4104 = 2^3 + 16^3 = 9^3 + 15^3
2. 13832 = 2^3 + 24^3 = 18^3 + 20^3
3. 20683 = 10^3 + 27^3 = 19^3 + 24^3
4. 32832 = 4^3 + 32^3 = 18^3 + 30^3

The discovery and study of Ramanujan numbers is an ongoing area of research in number theory, and mathematicians continue to look for more examples of these intriguing numbers. In fact, some mathematicians have even extended the concept of Ramanujan numbers to other dimensions and shapes, such as sums of squares and other geometric figures. So while 1729 may be the most famous Ramanujan number, it is by no means the only one.

## Why Ramanujan is so genius?

Ramanujan was considered a genius because of his extraordinary abilities in the field of mathematics despite little formal education. His brain was a remarkable tool, full of an inexplicable intuition and creativity that paved the way for unique mathematical constructions. It has been suggested that Ramanujan’s mathematical accomplishments were the result of a deep spiritual and intuitive connection to the universe.

Ramanujan’s gift for mathematics was noticed at an early age when he was still a schoolboy. His teachers and peers were stunned by his incredible memory, which allowed him to recite advanced mathematical formulas and concepts, despite being completely self-taught. Ramanujan’s interest in mathematics was highly unusual for that time, as most young people were drawn to music or literature. As he continued to grow, Ramanujan’s passion for mathematics deepened, and he began to explore more profound and complex theories and calculations.

One of the most remarkable aspects of Ramanujan’s work was his ability to comprehend and create mathematical formulas and theories that had never before been seen. His brilliance enabled him to develop his own system of mathematical notation, which allowed him to apply his unique understanding of mathematics in new and exciting ways. His extraordinary abilities were noticed by British mathematician G.H. Hardy, who invited Ramanujan to work with him at Cambridge University.

Ramanujan’s work in mathematics focused on areas such as number theory and infinite series, and was characterized by his use of texture and color in his mathematical constructions. He was able to derive highly complex theories and formulas that eluded many of his contemporaries, and which subsequently formed the basis for many modern mathematical ideas. Despite his incredible genius, Ramanujan was known to be humble and never lost his interest in learning and exploring new areas of mathematics.

Ramanujan is considered a genius due to his unparalleled ability to grasp complex mathematical theories and concepts, his unyielding curiosity, and his groundbreaking contributions to the field. His life and work are still an inspiration to many today, and he remains one of the most unique and brilliant minds to have ever lived.

## What was the IQ of Ramanujan?

Srinivasa Ramanujan was an Indian mathematician who made significant contributions in number theory, infinite series, and continued fractions. He was born on December 22, 1887, in Erode, Madras Presidency (now Tamil Nadu), India. Ramanujan was initially a self-taught mathematician who showed an incredible aptitude for numbers and mathematical patterns.

Ramanujan’s IQ, which is a measure of intelligence, is not known as it was never formally tested. However, his mathematical abilities and the sheer number and complexity of his discoveries suggest that he was a genius. In fact, Ramanujan’s work had a profound impact on modern mathematics, and he is widely regarded as one of the greatest mathematicians of all time.

Despite his lack of formal education, Ramanujan was able to independently develop mathematical theories and formulas that had eluded even the most brilliant mathematicians of his time. His most famous work was on the theory of partitions, which deals with the ways that integers can be expressed as sums of other integers. He also made significant contributions to the study of modular functions, hypergeometric series, and continued fractions.

In 1913, Ramanujan wrote a letter to the renowned British mathematician G. H. Hardy, in which he presented a series of remarkable mathematical discoveries. Hardy was so impressed by Ramanujan’s work that he invited him to study at the prestigious University of Cambridge in England. Ramanujan traveled to England in 1914, and he and Hardy collaborated on several important mathematical papers.

Sadly, Ramanujan’s time at Cambridge was cut short when he fell ill with tuberculosis. He returned to India in 1919, where his health continued to deteriorate. He died on April 26, 1920, at the age of 32.

While Ramanujan’s IQ was never formally tested, his incredible mathematical abilities and the significance of his mathematical discoveries suggest that he was a genius. His legacy has had a profound impact on modern mathematics, and he is regarded as one of the greatest mathematicians of all time.

## Is 1729 a perfect cube?

To determine if 1729 is a perfect cube, we need to find its cube root. One way to do this is to use trial and error by finding the cube of a few numbers until we get close to 1729. However, this method can be time-consuming and impractical for larger numbers. Alternatively, we can use the following formula to find the cube root of 1729:

Cube root of n = n^(1/3)

Using this formula, we can find the cube root of 1729 as:

Cube root of 1729 = 1729^(1/3)
= 12.99988 (rounded to five decimal places)

Since the cube root of 1729 is not a rational number, it means that 1729 is not a perfect cube. However, we can still write 1729 as the product of a perfect square and a cube of a smaller number. We can write:

1729 = 13^3 + 10^3

This is known as Hardy-Ramanujan Number, and it is a sum of two cubes in two different ways. Although 1729 is not a perfect cube, it has a unique mathematical property that makes it interesting.

## How many Ramanujan numbers are there?

Ramanujan numbers are a class of natural numbers that can be expressed as the sum of two cubes in two different ways. For example, 1729 is a Ramanujan number because it can be expressed as the sum of two cubes in two different ways: 1^3 + 12^3 and 9^3 + 10^3.

The existence of Ramanujan numbers was first demonstrated by the famous Indian mathematician Srinivasa Ramanujan. Ramanujan had a special affinity for numbers and discovered many interesting properties of integers. The concept of Ramanujan numbers is just one example of his mathematical genius.

There is no known formula to determine Ramanujan numbers, and they are relatively rare. It is known that the smallest Ramanujan number is 1729, and the next one is 4104. It is believed that there are infinitely many Ramanujan numbers, but this has not been proven.

In recent years, there has been much interest in studying Ramanujan numbers due to their unique properties and the fascinating connections they have to other areas of mathematics, such as elliptic curves and modular forms. While the exact number of Ramanujan numbers remains unknown, ongoing research continues to shed light on this intriguing mathematical concept.

## What is the next Ramanujan number after 1729?

The next Ramanujan number after 1729 is 4104. Ramanujan numbers are special numbers that can be expressed as the sum of two different sets of cubes. For example, 1729 can be expressed as the sum of two sets of cubes: 1³ + 12³ and 9³ + 10³.

Ramanujan numbers are named after the famous Indian mathematician Srinivasa Ramanujan, who discovered them. Ramanujan was a self-taught mathematician who grew up in poverty and faced many obstacles in pursuing his love of mathematics. Despite these challenges, he made extraordinary contributions to the field of mathematics, including discoveries related to number theory, infinite series, and continued fractions.

In addition to his contributions to mathematics, Ramanujan inspired many people with his perseverance and dedication to his work. He believed that mathematics was more than just a subject to be studied; it was a way of life. His legacy lives on today in the countless mathematicians who continue to be inspired by his work and his spirit.

The next Ramanujan number after 1729 is 4104. Ramanujan numbers are special numbers that can be expressed as the sum of two different sets of cubes, and are named after the famous Indian mathematician Srinivasa Ramanujan. His legacy lives on today in the countless mathematicians who continue to be inspired by his work and his spirit.

## Is 2520 discovered by Ramanujan?

Yes, 2520 is famously associated with the Indian mathematician Srinivasa Ramanujan, who made significant contributions to the field of number theory in the early 20th century. Ramanujan was born in 1887 in what is now the Indian state of Tamil Nadu, and grew up in poverty. Despite limited formal education, Ramanujan showed an early aptitude for mathematics and began exploring the subject on his own.

Ramanujan’s most fruitful period of mathematical discovery began in 1913, when he began corresponding with the British mathematician G.H. Hardy. Ramanujan went on to develop a number of groundbreaking formulas and theorems, many of which were previously unknown to Western mathematicians.

One of Ramanujan’s most famous contributions to mathematics was the concept of a “highly composite number” – that is, a positive integer with more divisors than any smaller integer. Ramanujan identified 15 highly composite numbers, one of which is 2520.

2520 is a unique highly composite number in that it is the smallest such number that is divisible by all of the integers from 1 to 10. In other words, 2520 is a multiple of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. This property has made 2520 of particular interest to mathematicians, as it has a variety of applications in number theory and other areas of mathematics.

While 2520 was not “discovered” by Ramanujan in the sense that it was already known to mathematicians, it is certainly associated with the Indian mathematician due to his work on highly composite numbers. Ramanujan’s contributions to mathematics have had a lasting impact on the field, and his genius continues to inspire mathematicians around the world today.

## Why is 1728 the great gross?

The term great gross can be defined as a unit of measure that equals 12 gross or 144 dozen, which means that it signifies a count of 1728. The reason why the number 1728 is associated with the great gross is because it is a highly divisible number that has several factors. As a result, it was commonly used in the field of commerce and trade as a measure for bulk products such as eggs, pencils, and paper.

One of the main factors that makes 1728 the great gross is that it is a perfect cube, which means that it is the product of three equal factors. Specifically, 1728 is equal to 12 cubed, where 12 is the number of items in a gross, making it a convenient value for trade and commerce. This feature made it easy for merchants to divide and multiply the great gross without the need for complicated calculations or conversions.

Furthermore, 1728 is also a multiple of other commonly used numbers such as 2, 3, 4, 6, 8, and 9, which allowed it to be easily broken down into smaller units or combined into larger ones. For example, a great gross of pencils could be divided into smaller units of dozens or grosses, or combined with other great grosses to create an even larger lot for wholesale trade.

The number 1728 is the great gross for its divisibility, making it an ideal standard of measurement for trade and commerce. Its ease of use and multiple factors have made it a critical component in calculating and packaging goods, which has made it a staple in the commercial world for centuries.

## What is the meaning of 1728 in English?

The number 1728 in English is a cardinal number that represents a quantity of one thousand seven hundred twenty-eight. The number 1728 can also be written as one thousand, seven hundred and twenty-eight.

In addition to its numerical value, the number 1728 also holds significance in various fields. In mathematics, 1728 is a cube number, meaning it is the product of three equal factors of 12. It is also the smallest number that can be expressed as the sum of two positive cubes in two different ways.

Furthermore, 1728 is often used as a standard unit of measurement in the field of acoustics. This is because it represents the number of cubic feet of air that corresponds to one second of reverberation time in a room that has a total surface area of 1000 square feet.

In literature, the number 1728 appears in various works as a symbol of perfection or completion. For example, in Dante’s Divine Comedy, the number 1728 represents the perfect cube of 12, which is seen as a symbol of the divine.

While the number 1728 has a specific numerical value, it also carries deeper meanings and significance in various fields and contexts.

## Whose square is 1728?

The square root of 1728 is first obtained by trying to find a perfect square factor of 1728. The prime factorization of 1728 is 2^6 * 3^3, which means that 1728 has a perfect square factor of 2^6 or 64 and a perfect square factor of 3^2 or 9. Multiplying 64 by 9 gives 576, which is a perfect square since it can be written as 24^2. Thus, the square root of 1728 is 24√3.

Now, if we want to know whose square is 1728, we need to find a number whose square root is 24√3. This is not a rational number, since it involves a surd or irrational number. However, we can plot this number on the real number line and estimate its value.

The square of a number is always positive, so the number whose square is 1728 must be positive. Since 24√3 is greater than 72, the number whose square is 1728 must be greater than 72. One possible way to estimate the number is to use a calculator to find the decimal approximation of 24√3, which is about 41.57. Then, we can look for a number that is close to 41.57 and whose square is close to 1728.

One possible candidate is 42, since 42^2 = 1764, which is only a little bit greater than 1728. Another way to check this is to square the surd directly, using the formula (a√b)^2 = a^2 * b. If we let a = 24 and b = 3, then (24√3)^2 = 24^2 * 3 = 1728, which confirms that 24√3 is the square root of 1728.

Therefore, we can say that the number whose square is 1728 is (24√3)^2 or (24^2) * 3.

## What is a gross number?

A gross number is a quantity of 144 items or units. It is commonly used in industries such as agriculture, manufacturing, and retail where products are often sold or packaged in bulk. The term “gross” is derived from the French word ‘grosse douzaine,’ which means “large dozen.” Therefore, a gross number can also be seen as a large quantity of items that are grouped together in a convenient and easy-to-manage manner.

In agriculture, for example, a gross number can be used to represent the number of eggs in a carton. A standard egg carton contains 12 eggs, and thus, a gross number of eggs would be equal to 12 cartons or 1,728 eggs. Similarly, in the manufacturing industry, a gross number is often used to measure the number of items produced in a batch. For instance, if a company produces 12 units of a product per box, then 12 boxes would make up a gross number of that product.

It is important to note that although the term “gross” may typically be associated with a negative connotation, when used regarding numbers, it simply refers to a specific quantity. Therefore, understanding the concept of a gross number can be useful for individuals working in areas that require bulk quantities, as it can provide an easy shorthand for discussing or organizing large quantities of items.

## What is the prime factorization of 1728?

Prime factorization is a way to find the prime factors of a given number. To find the prime factorization of 1728, it is necessary to divide the number by prime factors until the result becomes a prime number.

Firstly, we can check if 2 is a factor of 1728. 2 is indeed a factor of 1728, so we can divide 1728 by 2 to get 864. Next, we can repeat the process of dividing the result by 2 until we reach an odd number. Continuing this process, we get:

1728 / 2 = 864
864 / 2 = 432
432 / 2 = 216
216 / 2 = 108
108 / 2 = 54
54 / 2 = 27

At this point, we have reached a result which is not divisible by 2 anymore. We can now check if 3 is a factor of 27. 3 is indeed a factor of 27, so we can divide 27 by 3 to get 9. This result is still not a prime number, so we can divide it again by 3 to get 3. At this point, we have reached a prime number, which means we have completed the prime factorization of 1728.

Therefore, the prime factorization of 1728 is:

2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3

## Which mathematician has the highest IQ?

It is not possible to accurately determine which mathematician has the highest IQ as IQ tests are not full-proof measures of intelligence and intelligence itself encompasses various dimensions including creativity, spatial awareness, critical thinking, and emotional intelligence, to name a few.

Moreover, many renowned mathematicians throughout history such as Sir Isaac Newton, Archimedes, and Alan Turing, to name a few, did not undergo IQ testing during their lifetime, making it impossible to measure their IQ scores retrospectively.

Additionally, a high IQ score does not necessarily translate into mathematical genius or success. Many factors such as access to quality education, exposure to challenging problems, perseverance, and creativity play a pivotal role in becoming an accomplished mathematician.

Therefore, it is more accurate to assess a mathematician’s contribution to the field based on their research, discoveries, and impact on the mathematical community rather than their IQ score. intelligence is a multi-dimensional construct that cannot be reduced to a single number or metric.