“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.”
Sheldon Cooper on the Big Bang Theory. The 73 reference is from Season 4, Episode 10 (The Alien Parasite Hypothesis), when Sheldon says “The best number is 73…. 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….
The number 73 has only two factors which are 1 and the number 73 itself. So 73 is a prime number.
In numerology, the number 73 is considered to be a “master” number. This means that it carries with it higher vibrations and spiritual meanings. When you see the number 73, it's a sign from your angels that they are with you and supporting you on your journey.
We know that 73 is a prime. We cannot factor it further since the prime numbers do not have factors other than one and the number itself.
But have you ever stopped to think why, out of all the numbers, the creators made Sheldon obsessed with this one? Well, according to Radio Times, it's a nod to the year that star Jim Parsons was born: 1973.
Since 73 is a prime number so it has only two factors 1 and 73.
Some other magic numbers are 1234, 226, 10, 1, 37, 46, 55, 73, etc. Note that if a number is a magic number then all the possible combinations of the number will also be the magic numbers.
The first few happy numbers are 1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94, 97, 100, ... (OEIS A007770).
A Googolplexian is a number with 10100 zeroes. Whilst larger numbers can be imagined, the Googolplexian is the largest number that could be found in the dictionary. The search engine Google adopted the term googol (with a few creative changes) for its name to represent the vast amount of information it has available.
“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.”
First Few Pairs of Twin Primes
The first fifteen pairs of twin primes are as follows: (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73), (101, 103), (107, 109), (137, 139), …
The divisors of 69 are \[1,3,23,69\]. So, the number 69 has more than two divisors. So, 69 is NOT a prime number.
He has a genius-level IQ of 187. (In The Big Bang Theory, it is said that his and Leonard's IQs add up to 360, and Leonard says his is 173. In Young Sheldon, his mother says that he has the same IQ as Albert Einstein and Stephen Hawking, though neither is known to have taken an IQ test.)
Sheldon Cooper, one of the main characters on “The Big Bang Theory,” first expressed his affinity for the number 73 during the show's 73rd episode, “The Alien Parasite Hypothesis,” which aired in 2010. “The best number is 73,” Cooper explained in the episode.
Returning home from college at the age of 13, Sheldon found his father having an affair with another woman. Ever since then, he's knocked three times to give the person time to "get their pants on."
A number is "sneaky" if you finally reach ZERO. Example 1: Is 95 sneaky? 95 _+92 - 52 = 81 - 25 = 56, 56 -+ 62 - 52 = 11, 11 -+ 12 - 12 = 0. We have reached 0, so 95 is sneaky.
We call it lucky 7, after all, and it's not like the slot machines in Las Vegas are dotted with 9s. "People's strongest emotional reaction is to the number 7, and this has been true throughout history," Bellow told Nautilus, though he admitted nobody knew exactly why that was.
9. In contrast to 8, the number 9 often represents pain or sadness.
It is often interpreted to argue that the number of objects an average human can hold in short-term memory is 7 ± 2. This has occasionally been referred to as Miller's law.
73 in words is seventy-three.
No, 99 is not a prime number. The number 99 is divisible by 1, 3, 9, 11, 33, 99. For a number to be classified as a prime number, it should have exactly two factors. Since 99 has more than two factors, i.e. 1, 3, 9, 11, 33, 99, it is not a prime number.
Multiples of 7 are 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, … and so on.
51 is not a prime number because it has 3 and 17 as divisors, as well as itself and 1. In other words, 51 has four factors.