87575...00000 (91-digits)

This number is a composite.

8 7575655267 3714132914
4224570907 6814455838 4501872333 5433071911 6772932797 2851909866 2912000000

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Let this number be C. C is the smallest number which can be written as 2a^2, 3b^3 and 5c^5 for which also C+1 and C-1 are prime. [Hartley]

Submitted: 2003-02-18 03:58:56; Last Modified: 2008-01-30 17:28:00.