43157099231631693
This number is a composite.
4315709 9231631693
The certification of 10^5019 + 43157099231631693 (43157099231631693 = 3^2 * 7^5 * 11^11), done during June/September 2001 by Giovanni and Marco La Barbera, took 13 weeks using Primo with an AMD Athlon 1.3 GHz processor. [Dobb]
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