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:










MnStatusDetails
1011229Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 271
TF target 260
TF below 2^83 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 32000000
B2 = 756203658210
ECM
DigitsB1Curves
2550000280 / 280
30250000197 / 640
Estimated T-Level: 26.5
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski0D20
VerifiedKen KrieselD268D0BABAB820D20
Verified2002-01-08S57483D268D0BABAB820D280307
Verified2010-06-13Rob_DeeD268D0BABAB820D2253152
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-07-30kkmrkkblmbrbkC2E56BAA41A7EF885744013
Verified2025-09-01KrieselC2E56BAA41A7EF88013
History
DateUserTypeResult
2025-09-18JossNF-PP1
Start=2/7, B1=1000000
2025-09-01pilot no moreCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
C2E56BAA41A7EF88
PRP proof power = 6
PRP: Verified
Proof certified good
2025-07-30carel van der westhuizenCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-07-30kkmrkkblmbrbkC-PRP
C2E56BAA41A7EF88
PRP proof power = 6
PRP: Verified
Proof certified good
2022-06-04axnNF-PM1
B1=32000000, B2=756203658210
2022-01-30NumberwangNF-PM1
B1=106000, B2=2525853330
2021-11-09NumberwangNF-PM1
B1=72000, B2=3147000
2018-11-19JossNF-PM1
B1=5020000, B2=203257029
2018-10-20JossNF-PM1
B1=5020000, B2=202245800, E=12
2018-05-01JossNF-PM1
B1=5020000, B2=101122900, E=12
2018-02-22JossNF-PM1
B1=5020000, B2=81600000, E=12
2018-02-22JossNF-PM1
B1=5020000, B2=40800000, E=12
2016-08-12JossNF-PM1
B1=5000000, B2=40800000, E=12
2016-07-09JossNF-PM1
B1=5000000, B2=20400000, E=12
2016-07-06JossNF-PM1
B1=5000000, B2=10200000, E=6
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2014-04-01Never Odd Or EvenNF
no factor from 2^70 to 2^71
2013-05-10Never Odd Or EvenNF
no factor from 2^69 to 2^70
2013-05-10Never Odd Or EvenNF
no factor from 2^68 to 2^69
2013-03-26Never Odd Or EvenNF
no factor from 2^67 to 2^68
2013-03-26Never Odd Or EvenNF
no factor from 2^66 to 2^67
2013-03-26Never Odd Or EvenNF
no factor from 2^65 to 2^66
2013-03-26Never Odd Or EvenNF
no factor from 2^64 to 2^65
2010-11-19Rob_DeeNF-PM1
B1=5000000, B2=5100000
2010-11-18Rob_DeeNF-PM1
B1=4800000, B2=5000000
2010-11-17Rob_DeeNF-PM1
B1=4600000, B2=4800000
2010-11-16Rob_DeeNF-PM1
B1=4400000, B2=4600000
2010-11-15Rob_DeeNF-PM1
B1=4200000, B2=4400000
2010-11-14Rob_DeeNF-PM1
B1=4000000, B2=4200000
2010-11-13Rob_DeeNF-PM1
B1=3800000, B2=4000000
2010-11-12Rob_DeeNF-PM1
B1=3600000, B2=3800000
2010-11-11Rob_DeeNF-PM1
B1=3400000, B2=3600000
2010-11-10Rob_DeeNF-PM1
B1=3200000, B2=3400000
2010-11-09Rob_DeeNF-PM1
B1=3000000, B2=3200000
2010-11-08Rob_DeeNF-PM1
B1=2800000, B2=3000000
2010-11-07Rob_DeeNF-PM1
B1=2600000, B2=2800000
2010-11-06Michael CNF
no factor from 2^63 to 2^64
2010-11-06Michael CNF
no factor from 2^62 to 2^63
2010-11-06Michael CNF
no factor from 2^61 to 2^62
2010-11-06Rob_DeeNF-PM1
B1=2400000, B2=2600000
2010-11-05Rob_DeeNF-PM1
B1=2200000, B2=2400000
2010-11-04Rob_DeeNF-PM1
B1=2000000, B2=2200000
2010-11-03Rob_DeeNF-PM1
B1=1800000, B2=2000000
2010-11-02Rob_DeeNF-PM1
B1=1600000, B2=1800000
2010-11-01Rob_DeeNF-PM1
B1=1400000, B2=1600000
2010-10-31Rob_DeeNF-PM1
B1=1200000, B2=1400000
2010-10-30Rob_DeeNF-PM1
B1=1000000, B2=1200000
2010-10-29Rob_DeeNF-PM1
B1=800000, B2=1000000
2010-10-28Rob_DeeNF-PM1
B1=600000, B2=800000
2010-10-27Rob_DeeNF-PM1
B1=400000, B2=600000
2010-06-13Rob_DeeC-LL
D268D0BABAB820D2
2009-02-16Sturle SundeNF
no factor from 2^60 to 2^61