44701...00001 (106-digits)

This number is a prime.

447011 5461512684 3408912571 3812505111
0076800700 2829050158 1908009237 0422104067 1833170169 0368000000 0000000001

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The smallest factorial prime greater than a googol of the form p = n! + 1 (n = 73). Note that 73 and its reversal are the only pair of double-digit emirps for which there are factorial primes. [Loungrides]

Submitted: 2009-11-03 15:46:08; Last Modified: 2009-11-05 02:34:54.