73
is the 21st prime number. Its mirror (37) is the 12th and its mirror (21) is the product of multiplying 7 and 3. In binary, 73 is a palindrome, 1001001 which backwards is 1001001.”
Why is 73 Special?
“The best number is 73,” Cooper explained in the episode. “Why? 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.”
What is sheldons favorite number?
We all know that Sheldon (Jim Parsons) from Big Bang Theory really loves the number
73
. He even has multiple shirts donning the figure.
What are the prime number from 1 to 100?
List of prime numbers to 100. 2,
3, 5, 7, 11, 13, 17, 19, 23, 29, 31
, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
Is 21 a prime and why?
Is 21 a Prime Number? No,
21 is not a prime number
. The number 21 is divisible by 1, 3, 7, 21. … Since 21 has more than two factors, i.e. 1, 3, 7, 21, it is not a prime 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.
Is 73 a lucky number?
LUCKY NUMBERS:
The lucky numbers are suggested on the basis of one’s name, date of birth etc. Most common lucky numbers: 1, 3, 7, 9, 13, 15, 21, 25, 31, 33, 37, 43, 49, 51, 63, 67, 69, 73, 75, 79, 87, 93, 99, … Number 8 is lucky in Chinese culture because the Chinese word for “eight” sounds like the word for “wealth”.
What is not a prime number?
Definition: A prime number is a whole number with exactly two integral divisors, 1 and itself. The number 1 is not a prime, since it has only one divisor. The number
4
is not prime, since it has three divisors ( 1 , 2 , and 4 ), and 6 is not prime, since it has four divisors ( 1 , 2 , 3 , and 6 ).
What does 73 stand for on Sheldon’s shirt?
Product description
“The best number is 73. Why? 73 is the 21st prime number. Its mirror (37) is the 12th and its mirror (21) is the product of multiplying 7 and 3. … In binary, 73 is
a palindrome, 1001001
which backwards is 1001001.” This episode is the 73rd episode in the entire Big Bang Theory series.
What number do most like?
| Position Number Percentage | 1 7 9.7 % | 2 3 7.5% | 3 8 6.7% | 4 4 5.6% |
|---|
Why is 11 not a prime number?
Is 11 a Prime Number? … The number 11 is
divisible only by 1 and the number itself
. For a number to be classified as a prime number, it should have exactly two factors. Since 11 has exactly two factors, i.e. 1 and 11, it is a prime number.
What is Coprime number?
In number theory, two integers a and b are coprime,
relatively prime or mutually prime if the only positive integer that is a divisor of both of them is 1
. Consequently, any prime number that divides one of a or b does not divide the other.
How can you identify a prime number?
To prove whether a number is a prime number,
first try dividing it by 2, and see if you get a whole number
. If you do, it can’t be a prime number. If you don’t get a whole number, next try dividing it by prime numbers: 3, 5, 7, 11 (9 is divisible by 3) and so on, always dividing by a prime number (see table below).
Is 21 a square number?
Informally: When you multiply an integer (a “whole” number, positive, negative or zero) times itself, the resulting product is called a square number, or a perfect square or simply “a square.” So, 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers.
Why is 25 a prime number?
Is 25 a Prime Number? … The number 25
is divisible by 1, 5, 25
. For a number to be classified as a prime number, it should have exactly two factors. Since 25 has more than two factors, i.e. 1, 5, 25, it is not a prime number.
What is the factor of 21?
The factors of 21 are
1, 3, 7, 21
and its negative factors are -1, -3, -7, -21.
