18913...21953 (1000-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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377351*2^3301+1 is a prime such that dropping all of its even digits produces a 512-digit prime. [Rivera]

Submitted: 2019-03-23 18:12:07; Last Modified: 2019-03-23 23:16:07.