41117...51817 (32-digits)

This number is a prime.

41 1173420950 9084172322 8045851817

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41117342095090841723228045851817 = (1!)^2 + (2!)^2 + (3!)^2 + (4!)^2 + (5!)^2 + (6!)^2 + (7!)^2 + (8!)^2 + (9!)^2 + (10!)^2 + (11!)^2 + (12!)^2 + (13!)^2 + (14!)^2 + (15!)^2 + (16!)^2 + (17!)^2 + (18!)^2 is prime. [Post]

Submitted: 2004-10-04 21:43:33; Last Modified: 2008-08-01 12:41:42.