73556...65537 (1001-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

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Palindromic prime formed by concatenating of all five known Fermat primes or their reversals: 3, 5, 17, 257 and 65537. [Rivera]

Submitted: 2019-03-21 12:40:34; Last Modified: 2019-03-21 13:51:57.