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

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Exponent Range:










MnStatusDetails
2819491TF
No factors below 270
TF target 263
TF below 2^71 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 12000000
B2 = 112482049680
ECM
DigitsB1Curves
2550000153 / 280
Estimated T-Level: 22.7
LL
StatusDateUserResidueShift
VerifiedDavid Tilley7F84301A2CC582C20
Verified1999-05-30Jon B Ball7F84301A2CC582C21578097
Verified2018-09-06kkmrkkblmbrbk7F84301A2CC582C2752572
History
DateUserTypeResult
2024-02-25mikrNF-PM1
B1=12000000, B2=112482049680
2023-10-20JossNF-PM1
B1=2629854, B2=5765609850
2023-10-19JossNF-PM1
B1=2629854, B2=2873961090
2023-10-19JossNF-PM1
B1=2629854, B2=1246214970
2023-10-18JossNF-PM1
B1=2629854, B2=432341910
2023-02-18JossNF-PM1
B1=1000000, B2=6265209720
2023-02-14JossNF-PM1
B1=1000000, B2=432341910
2020-01-19masserNF-PM1
B1=5000000, B2=200000000, E=12
2019-11-10masserNF-PM1
B1=3000000, B2=30000000, E=12
2019-05-22BigBrotherNF-PM1
B1=1000000, B2=10000000, E=12
2018-09-12JossNF-PM1
B1=663552, B2=1327104, E=4
2018-09-06kkmrkkblmbrbkC-LL
7F84301A2CC582C2
2018-09-05JossNF-PM1
B1=607357
2018-09-03JossNF-PM1
B1=506131
2018-05-15YxinityNF
no factor from 2^69 to 2^70
2018-05-15YxinityNF
no factor from 2^68 to 2^69
2017-11-06mikrNF
no factor from 2^67 to 2^68
2017-10-28Gordon SpenceNF
no factor from 2^66 to 2^67
2017-04-04JossNF-PM1
B1=331776, B2=3317760, E=6
2017-01-10JossNF-PM1
B1=230400
2016-12-19JossNF-PM1
B1=192000
2016-09-11JossNF-PM1
B1=160000, B2=3300000, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-12ramgeisNF
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
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-02-24Grant McCrackenNF
no factor from 2^61 to 2^62
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61