Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnDetails
853
Composite, with 4 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
20657118071030.9old
5137406458194731548.9old
47279972288052790652332272.0old
1844945010698291147787103443014821771669564628226606420420548874573888801078928980263.32009-03-04 18:03:43
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2024-09-06George WoltmanPRP_PRP_PRP_PRP_4013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRPM853/2065711807/513740645819473/4727997228805279065233/18449450106982911477871034430148217716695646282266064204205488745738888010789289
PRP Cofactor
2009-03-04-anonymous-F-ECMFactor: 18449450106982911477871034430148217716695646282266064204205488745738888010789289
2000-08-01-anonymous-F-PM1Factor: 1061240117805090566617711