13646...00001 (593-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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The product of first 259 even numbers (2 through 518) plus 1 is the only known prime of this type, as of 23 July 2020. [Gupta]

Submitted: 2020-07-23 14:22:00; Last Modified: 2020-07-23 15:08:15.