Top P-1 factors of Mersenne numbers

Top P-1 factors of all time for William B. Adams

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#UserExponentFactorBits*Date
1William B. Adams579715872943437667278461999570374.6402011-12-31 05:21:00
2William B. Adams4458354157326614901121855129768.9582009-04-17 09:42:00