The best number in the world is 73 (not 42 or guys - not 5,318,008). 73 is the 21st prime number, it's mirror 37 is the 12th. And it's mirror 21 is the product of multiplying (hang on to your hats) 7 and 3. In binary 73 is a palindrome 1001001 which backwards 1001001 exactly the same.
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