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73 is cool because it’s the 21st prime, and its mirror, 37, is the 12th. Plus, 21 (its mirror) is 7 x 3! Oh, and in binary, 73 is a palindrome too. Pretty near, right?
Yeah, weird 37 isn't in this list
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73 is cool because it’s the 21st prime, and its mirror, 37, is the 12th. Plus, 21 (its mirror) is 7 x 3! Oh, and in binary, 73 is a palindrome too. Pretty near, right?
Yeah, weird 37 isn't in this list
Funny how the top two numbers are 7 and 3. Put them together and you get 73, which is actually one of the coolest prime numbers in math!