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

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MnDetails
983
Composite, with 1 known prime factor. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
180822625791455120996447326086641792920702343140.4old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2024-09-06George WoltmanPRP_PRP_PRP_PRP_1013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRPM983/1808226257914551209964473260866417929207023
PRP Cofactor
1998-07-21-anonymous-NFno factor TF: 52-54
1998-05-23Alex KruppaNFno factor TF: 52-53
1998-05-23Alex KruppaNFno factor TF: 51-52
1998-05-16Alex KruppaNFno factor TF: 51-52