Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
1905443TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 18300000
B2 = 58654445850
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedThomas HonoldEA10457A52E4C9690
Verified1998-12-21Stuart AveryEA10457A52E4C969707275
Verified2015-07-14MadPooEA10457A52E4C969875094
History
DateUserTypeResult
2023-10-09Sid & AndyNF-PM1
B1=18300000, B2=58654445850
2023-06-20JossNF-PM1
B1=1905443, B2=5395249860
2023-01-11JossNF-PM1
B1=1905443, B2=1890473970
2022-08-09masserNF-PP1
Start=2/7, B1=1500000, B2=54000000
2019-04-26chuenkitNF
no factor from 2^67 to 2^68
2017-11-27mikrNF-PM1
B1=8000000, B2=320000000, E=12
2017-03-15Smok_bmv NF
no factor from 2^66 to 2^67
2015-08-31ramgeisNF
no factor from 2^65 to 2^66
2015-07-14MadPooC-LL
EA10457A52E4C969
2015-05-19omylistNF
no factor from 2^64 to 2^65
2015-05-17omylistNF
no factor from 2^63 to 2^64
2011-05-31kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2011-02-07GrunwalderGIMPNF
no factor from 2^62 to 2^63
2011-02-07GrunwalderGIMPNF
no factor from 2^61 to 2^62
2009-05-25Architects CubedNF
no factor from 2^60 to 2^61