## When was Kaprekar born?

January 17, 1905, Dahanu, IndiaD. R. Kaprekar / Born

## When did D. R. Kaprekar died?

1986D. R. Kaprekar / Date of death

**How did Kaprekar find his constant?**

Rearrange the digits to form the largest and smallest numbers with these digits, namely 7643 and 3467, and subtract the smaller from the larger to obtain 4167. Continue the process with this number – subtract 1467 from 7641 and we obtain 6174, Kaprekar’s constant.

**Which is the Kaprekar number?**

6174 is known as Kaprekar’s constant after the Indian mathematician D. R. Kaprekar.

### Who invented Kaprekar number?

mathematician D. R. Kaprekar

In 1949, Indian mathematician D. R. Kaprekar, discovered the mysterious beauty of 6174 after devising a process that we now know as Kaprekar’s operation. The operation: start with any four-digit number that is made up of least two different digits, including zero.

### What is Kaprekar constant?

Kaprekar constant, or 6174, is a constant that arises when we take a 4-digit integer, form the largest and smallest numbers from its digits, and then subtract these two numbers. Continuing with this process of forming and subtracting, we will always arrive at the number 6174.

**Is 10 a Kaprekar number?**

The first few cubic Kaprekar numbers are 1, 8, 10, 45, 297, 2322, 2728, 4445, 4544, 4949, 5049, 5455, 5554, 7172, 27100, 44443, 55556, 60434, 77778, 143857.

**Why is 7 the most common number?**

The writer suggested that the reason for seven’s popularity is its prevalence in global culture, from Snow White and the Seven Dwarves, to the existence of seven days in a week.

## What is the perfect number?

perfect number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.

## Why 1729 is a magic number?

It is 1729. Discovered by mathemagician Srinivas Ramanujan, 1729 is said to be the magic number because it is the sole number which can be expressed as the sum of the cubes of two different sets of numbers. Ramanujanâ€™s conclusions are summed up as under: 1) 10 3 + 9 3 = 1729 and 2) 12 3 + 1 3 = 1729.

**What is the rarest number?**

The number 6174 is a really mysterious number. At first glance, it might not seem so obvious. But as we are about to see, anyone who can subtract can uncover the mystery that makes 6174 so special.

…

Two digits, five digits, six and beyond…

Digits | Kernel |
---|---|

2 | None |

3 | 495 |

4 | 6174 |

5 | None |

**Why 1729 is a special number?**

It’s the smallest number expressible as the sum of two cubes in two different ways.” 1729 is the sum of the cubes of 10 and 9. Cube of 10 is 1000 and the cube of 9 is 729. Both the cubes, therefore, add up to 1729.

### Why is 9 an important number?

The number 9 is revered in Hinduism and considered a complete, perfected and divine number because it represents the end of a cycle in the decimal system, which originated from the Indian subcontinent as early as 3000 BC.

### Why is 1089 a magic number?

1089 is widely used in magic tricks because it can be “produced” from any two three-digit numbers. This allows it to be used as the basis for a Magician’s Choice.

**Which number is luckiest?**

Perhaps part of the answer lies in a seminal paper published in 1956 by the psychologist George A Miller called “The Magical Number Seven, Plus or Minus Two”. Miller claims that it is more than just coincidence that the number 7 seems to be all around us.

**What are the 3 luckiest numbers?**

Luckiest Lotto Max Numbers

39 being drawn on 2.49% of all draws. 19 and 38 on 2.29% of all draws. 18 and 44 on 2.27% of all draws.

## What is strong number?

Strong number is a special number whose sum of the factorial of digits is equal to the original number. For Example: 145 is strong number. Since, 1! + 4! + 5!

## Why is 9 a magic number?

9 is called the magic number because the sum of the digits of the multiples of 9 is always 9.

**Who Found 2520?**

mathematician Sri Srinivasa Ramanujan

These secrets about the number 2520 were discovered by the great Indian mathematician Sri Srinivasa Ramanujan. 2520 is the smallest number divisible by all integers from 1 to 10, i.e., it is their least common multiple.

**Who is the father of maths?**

philosopher Archimedes

The Father of Math is the great Greek mathematician and philosopher Archimedes. Perhaps you have heard the name before–the Archimedes’ Principle is widely studied in Physics and is named after the great philosopher.

### What is a cute number?

A number n such that a square can be cut into n squares of, at most, two different sizes. For example, 4 and 10 are cute numbers.

### What is the most beautiful number?

What Is So Special About The Number 1.61803? The Golden Ratio (phi = φ) is often called The Most Beautiful Number In The Universe. The reason φ is so extraordinary is because it can be visualized almost everywhere, starting from geometry to the human body itself!

**Who used zero first?**

The first recorded zero appeared in Mesopotamia around 3 B.C. The Mayans invented it independently circa 4 A.D. It was later devised in India in the mid-fifth century, spread to Cambodia near the end of the seventh century, and into China and the Islamic countries at the end of the eighth.

**What is Hindu lucky number?**

Religion and the arts

The number 108 is considered sacred by the Dharmic Religions, such as Hinduism, Buddhism, and Jainism.

## What is a lucky number in India?

The number 13 is actually a very lucky number. In fact, in India, the 13th day of the lunar fortnight is known to be highly auspicious and is called Triyodashi. It belongs to Lord Shiva and is said to bestow long life, peace and good fortune.