# Why Is 73 A Prime Number?

## Why is three the perfect number?

Three is the smallest number we need to create a pattern, the perfect combination of brevity and rhythm.

It’s a principle captured neatly in the Latin phrase omne trium perfectum: everything that comes in threes is perfect, or, every set of three is complete..

## Why is 28 a perfect number?

A number is perfect if all of its factors, including 1 but excluding itself, perfectly add up to the number you began with. 6, for example, is perfect, because its factors — 3, 2, and 1 — all sum up to 6. 28 is perfect too: 14, 7, 4, 2, and 1 add up to 28.

## What does 73 stand for?

best regards73 is an old telegraph code that means “best regards”. 73, as well as 88 (which means “hugs and kisses”) are part of the language of ham radio.

## Why is number 73 special?

“Its mirror, 37, is the 12th and its mirror, 21, is the product of multiplying 7 and 3 … and in binary 73 is a palindrome, 1001001, which backwards is 1001001.” If you were lost by all those complicated math terms, basically, 73 is unique because it has properties that other numerals don’t have.

## What is the rarest number?

Other examples of rare numbers are 65, 621770, 281089082, 2022652202, 868591084757, 872546974178 … (Sequence A035519 of OEIS). If we consider palindromic rare numbers, there are infinitely many rare numbers.

## What is Sheldon Cooper’s middle name?

Sheldon Lee Cooper (Jim Parsons) is a theoretical physicist, possessing a BS, MS, PhD, Sc.

## What is the world’s favorite number?

sevenA survey launched by a British mathematics writer has found that seven is the world’s favorite number, reports The Guardian. The results of the online survey were published on Tuesday, with three, eight and and four coming second, third and fourth.

## What is the most important number in the world?

But the following 10 are the most important numbers, or constants, in the entire world.The Speed of Light: 186,282 miles per second. … Gravitational Constant (G): 6.67300 x 10^-11 m^3 kg^-1 s^-2. … Boltzmann’s Constant: 1.380650 x 10^23 joule per kelvin. … Imaginary Unit: i. … Euler’s Identity: e^(i*pi) = -1.More items…•

## What is the definition of prime number?

Scientific definitions for prime number prime number. A positive integer greater than 1 that can only be divided by itself and 1 without leaving a remainder. Examples of prime numbers are 7, 23, and 67. Compare composite number.

## Why is 73 the best number in the universe?

“The best number is 73,” Cooper explained in the episode. … 73 is the 21st prime number. Its mirror, 37, is the 12th, and its mirror, 21, is the product of multiplying seven and three … and in binary, 73 is a palindrome, 1001001, which backwards is 1001001.”

## Is 73 divisible by any number?

How do we know that 73 is a prime number? … Since 73 cannot be divided evenly by 2, 3, 5, or 7, we know that 73 is a prime number.

## Why is 12 a perfect number?

Twelve is a sublime number, a number that has a perfect number of divisors, and the sum of its divisors is also a perfect number. Since there is a subset of 12’s proper divisors that add up to 12 (all of them but with 4 excluded), 12 is a semiperfect number.

## What is the most 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. The discovery of such numbers is lost in prehistory.

## What is the most unique number?

Therefore the number 6174 is the only number unchanged by Kaprekar’s operation — our mysterious number is unique. The number 495 is the unique kernel for the operation on three digit numbers, and all three digit numbers reach 495 using the operation.

## Why is 72 a special number?

The good god Osiris was enclosed in a coffin by 72 evil disciples and accomplices of Set. At the age of the puberty, the young Parsee received the investiture of the sacred cord Kucti made of 72 linens in symbol of the community. In Cao Đài, the number of planets between hell and heaven.

## How do you write 73 in binary?

On Convert Binary dot com you can find the numbers from 0 to 100 in their binary code representation. If you want to know the binary representation of any decimal number up to 7 digits, check out the Decimal to binary converter….DECIMAL NUMBERS IN BINARY.0072100100073100100174100101075100101196 more rows

## What does the 73 on Sheldon’s shirt stand for?

Product description 73 is the twenty-first prime number. Its mirror, 37, is the twelfth and its mirror, 21, is the product of multiplying (hang on to your hats) 7 and 3…. In binary, 73 is a palindrome: 1-0-0-1-0-0-1, which backwards is 1-0-0-1-0-0-1.” -Sheldon.

## Is 73 the perfect number?

Answer and Explanation: The number 73 is not a perfect number, but the number does have some odd qualities that make it unique. First, 73 is the 21st prime number.