Patterns galore.........71....is the 20th prime.......e is 2.71........how it starts...................71 is the 16th prime in 2 digits..................and the 6th from the end......................of 2 digit primes......6 is the 1st perfect number..

11 is the 1st prime with 2 digits.....like one of the 2 prime fundamentals....2 - 11 and 2......maybe ...i am not sure.........so.......from 11 and including 11..a closed set.........71 is the 16th prime....11 + 16 = 27..........11 through 16 in e......459045..........................6 from the end..........16th in 2 digits....6 + 16 = 22..........2 twos.........balance....with respect to multiplication and addition...

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List of First 25 Prime Numbers. Sequence, Prime Number. 1, 2. 2, 3. 3, 5 ...