10000...00019 (64-digits)

This number is a composite.

      1000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000019

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1063 + 19 is a 64-digit semiprime with 64/2-digit factors. How fast can your computer find them?

Submitted: 2003-07-20 15:27:49;   Last Modified: 2008-01-30 11:28:00.
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