83323...34849 (774-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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A 774-digit Proth prime of the form 1923*2^2560+1; with Proth witness a=11, 11^((N-1)/2) is congruent to -1 modulo N. [Balevsky]

Submitted: 2026-04-07 15:24:33; Last Modified: 2026-04-07 18:44:48.