419

This number is a prime.

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419 is the third prime of the form Prime(n^(n+1)) whose octal representation, read as a decimal integer, is also prime: 2 -> 2, 19 -> 23, 419 -> 643. [Ahmed]

Submitted: 2026-06-14 06:36:56; Last Modified: 2026-06-14 13:09:33.