Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
9699959
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 268
Factored
FactorDigitsBitsDate
321201270912764999212064.82011-07-01 17:05:36
LL
StatusDateUserResidueShiftSoftware
Factored2000-04-12David RobertsB7B12AB84317C7481714925Windows,Prime95,v19,(aka WV1)
Factored2004-04-20Ars Technica Team Prime RibB7B12AB84317C748825009Linux 32-bit,Prime95,v23,(aka WZ2)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2019-10-14ATH8BAF73237EB706211608907653
Verified
Certified Good
2020-12-23storm55108BAF73237EB706211804996253
History
DateUserTypeResult
2025-12-15Mingye WangNFno factor TF: 68-69
2020-12-23GregCERT
Proof certified good
2020-12-23storm5510C-PRP
Proof Certified Good

Proof Power: 8

2019-10-14ATHC-PRP
M9699959/32120127091276499921 : 8BAF73237EB70621
2011-07-01James HeinrichFFactor: 32120127091276499921
2004-04-20Team Prime RibC-LLB7B12AB84317C748
2003-08-25-anonymous-NF-PM1B1=50000, B2=50000
2000-04-12-anonymous-C-LLB7B12AB84317C748
1999-07-04GuildensternNFno factor TF: 1-64