Top P-1 factors of Mersenne numbers

Top P-1 factors of all time for Ulfert Rist

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#UserExponentFactorBits*Date
1Ulfert Rist549256271409220042344537867223069184993.5092012-01-11 06:57:00
2Ulfert Rist4626472733801459204289546680548978.1612008-10-23 12:07:00