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
2859697Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000
B2 = 20521471740
ECM
DigitsB1Curves
2550000280 / 280
3025000059 / 640
Estimated T-Level: 25.5
LL
StatusDateUserResidueShift
VerifiedJim Fare0CBDCFDE66ECAF770
VerifiedPete Evans0CBDCFDE66ECAF770
Verified1999-05-09Barry Wilson0CBDCFDE66ECAF77302947
History
DateUserTypeResult
2024-06-10JossNF-PM1
B1=10000000, B2=20521471740
2023-10-20JossNF-PM1
B1=2615001, B2=5765609850
2023-10-20JossNF-PM1
B1=2615001, B2=2873961090
2023-10-18JossNF-PM1
B1=2615001, B2=1246214970
2023-10-13JossNF-PM1
B1=2615001, B2=432341910
2023-09-26JossNF-PM1
B1=1000000, B2=6484966950
2023-09-12JossNF-PM1
B1=1000000, B2=3180237060
2023-09-05NumberwangNF-PM1
B1=264000, B2=1337459970
2023-07-17TJAOINF
no factor from 2^69 to 2^70
2023-05-15JossNF-PM1
B1=1000000, B2=1552518000
2021-06-21TJAOINF
no factor from 2^68 to 2^69
2019-10-30BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2019-10-30masserNF-PM1
B1=2860000, B2=28600000, E=12
2019-01-07chuenkitNF
no factor from 2^67 to 2^68
2017-11-12Gordon SpenceNF
no factor from 2^66 to 2^67
2017-04-22JossNF-PM1
B1=348124, B2=3481240, E=6
2016-12-23JossNF-PM1
B1=208874
2016-07-29JossNF-PM1
B1=174062, B2=4515000, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-17YxinityNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2012-02-02Grant McCrackenNF
no factor from 2^61 to 2^62
2011-01-30markrNF-PM1
B1=105000, B2=2257500, E=6
2011-01-27JossNF-PM1
B1=50000
2011-01-03JossNF-PM1
B1=30000
2010-12-22JossNF-PM1
B1=20000
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=157500
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61