73 T-shirt From Sheldon Cooper’s Closet As Seen on the Big Bang Theory (Fast Worldwide Shipping), size Large

From Sheldon Cooper's Closet
Available for immediate shipment
Available in men's Medium, Large, and X-Large sizes
Great gift for any fan!
Ships Worldwide! 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.... In binary, 73 is a palindrome: 1-0-0-1-0-0-1, which backwards is 1-0-0-1-0-0-1." More »