Top P-1 factors of Mersenne numbers

Top P-1 factors of all time for Fred Spitler

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#UserExponentFactorBits*Date
1Fred Spitler5509573110557296813643592327559273083996.4142012-03-10 05:18:00
2Fred Spitler51197299379211283890062964241384181.6492011-04-25 12:18:00
3Fred Spitler55059373132416799336108552938114380.1312012-04-26 23:30:00
4Fred Spitler44703031171285280523880573039170.5372010-12-29 12:27:00