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….

Contents

- 1 What does the number 73 mean on a shirt?
- 2 Why does Sheldon wear a 73 on his shirt?
- 3 What does the symbol on Sheldon’s shirt mean?
- 4 What does 43 mean to Sheldon?
- 5 What does the number 73 stand for?
- 6 What is special about the number 73?
- 7 What is the IQ of Jim Parsons?
- 8 Is 73 the perfect number?
- 9 What is Sheldon Cooper’s favorite number and why?
- 10 What is the design on Sheldon’s shirt?
- 11 What is Sheldon’s yellow shirt with bird?
- 12 What are the shirts that Sheldon Cooper wear?
- 13 Did Penny really love Leonard?
- 14 When did Penny find out she was pregnant?

## What does the number 73 mean on a shirt?

Product description 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.

## Why does Sheldon wear a 73 on his shirt?

“73 is the 21st prime number,” Sheldon explains. “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.” So, long story short, 73 is an incredibly unique number that also happens to fit the actor himself.

## What does the symbol on Sheldon’s shirt mean?

With several different colours for the ‘lantern ‘ shirts representing different emotions, one theory suggests that Sheldon’s choice of shirt is a clue to his mood that day. The colours include: red for anger, orange for greed, yellow for fear, green for courage and blue for hope.

## What does 43 mean to Sheldon?

(Turns out 43 is the number of times he’s been able to bounce a hacky sack without dropping it. Pretty impressive for a guy as uncoordinated as Sheldon.) This episode started out as a pretty big down for me because as I said, I had a lot to complain about with regards to the Leonard and Penny storyline.

## What does the number 73 stand for?

“The Alien Parasite Hypothesis,” the number 73 is actually pretty special. “73 is the 21st prime number,” Sheldon explains. “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.”

## What is special about the number 73?

How this special number 73 was discovered? 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 the IQ of Jim Parsons?

Sheldon Cooper — a character played by Jim Parsons in CBS’s The Big Bang Theory — has an IQ of 187 and several advanced degrees but often has trouble with social interactions with other people. Jim Parsons is an actor, not a scientist.

## Is 73 the perfect number?

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.

## What is Sheldon Cooper’s favorite number and why?

Sheldon: “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.”‘”

## What is the design on Sheldon’s shirt?

Sheldon Coopers ’73’ Shirt 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.” — Sheldon Cooper Need I say more?

## What is Sheldon’s yellow shirt with bird?

Sheldon’s yellow Hawkman shirt on The Big Bang Theory.

## What are the shirts that Sheldon Cooper wear?

50 Spectacular Sheldon Cooper T-Shirts on The Big Bang Theory

- Gray Flash.
- Distressed Superman Logo.
- Riddler Bats Question Mark.
- Red Flash.
- Batman and Robin.
- Computer Explosion.
- Gray Aquaman.
- Green Lantern Athletic Stripe.

## Did Penny really love Leonard?

She wanted a normal and stable relationship, which is why she settled for her best friend Leonard. This could be why it took her years to tell Leonard she loved him. In one episode, Leonard and Penny got upset with Sheldon and Amy for thinking that they were an inferior couple. But the reality was they were.

## When did Penny find out she was pregnant?

In “The Change Constant”, after Penny took Sheldon out drinking at the Cheesecake Factory, she returned to Leonard and had spontaneous sex with him without any protection which resulted in her pregnancy. In the series finale, Penny finds out that she is expecting a baby.