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
5210651TF
No factors below 272
TF target 266
P-1
B1 = 7000000
B2 = 5981471760
ECM
DigitsB1Curves
255000030 / 280
Estimated T-Level: 20.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-07-29Laura CookseyD4C4A7A6B24A28950
Verified2001-02-04rob.boelD4C4A7A6B24A2895132198
History
DateUserTypeResult
2022-06-19Sid & AndyNF-PM1
B1=7000000, B2=5981471760
2021-09-21SRBaseNF
no factor from 2^71 to 2^72
2021-08-25happy5214NF-PP1
Start=2/7, B1=1250000, B2=78750000
2021-08-25happy5214NF-PM1
B1=2500000, B2=207500000
2021-08-23SRBaseNF
no factor from 2^70 to 2^71
2021-08-17SRBaseNF
no factor from 2^69 to 2^70
2020-12-08TJAOINF
no factor from 2^68 to 2^69
2018-06-17ramgeisNF
no factor from 2^67 to 2^68
2018-04-15Squeeky_SquirrelNF-PM1
B1=310000, B2=9222500, E=12
2016-05-28Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-10snme2pm1NF
no factor from 2^65 to 2^66
2014-12-19VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-19VictordeHollanderNF
no factor from 2^63 to 2^64
2009-10-22USAFSSNF-PM1
B1=60000, B2=975000, E=6
2009-06-18GrunwalderGIMPNF
no factor from 2^62 to 2^63