10000...00059 (300-digits)

This number is a composite.

1000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000059

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The smallest 300-digit semiprime. Note that (10²⁹⁹ + 59)/3 is a near-repdigit prime. [Wesolowski]

Submitted: 2010-02-27 18:59:19; Last Modified: 2010-03-01 01:14:08.