10000...00001 (127-digits)

This number is a prime.

1000000 0000000000 0000000000 0000000000 0000000000 0000000000
0000008000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000001

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A tetradic prime of the form 100^n+8*10^n+1 containing a Mersenne prime number of digits. [Michel]

Submitted: 2020-07-25 18:13:50; Last Modified: 2020-07-25 23:34:53.