Top P-1 factors of Mersenne numbers

Top P-1 factors of all time for btrous

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#UserExponentFactorBits*Date
1btrous4520750911802496520068278148855369786.6092009-01-05 19:14:00
2btrous42579347125747605959355153903370.0912009-03-27 01:25:00
3btrous4516172377092676881181540603369.3852009-01-04 19:35:00
4btrous4516174749546257265347116659368.7472009-01-08 16:52:00