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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 - sheldon cooper TBBT
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Silkscreened with white ink.
Black Gildan, 100% cotton heavyweight tee, 5.2 oz
Printed in the USA