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

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Exponent Range:










MnStatusDetails
1909949TF
No factors below 269
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 18300000
B2 = 52845412620
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
Verified1997-12-30Mikko Tommila5D2FADEE44C8DF330
Verified1999-01-02David Underbakke5D2FADEE44C8DF33892111
Verified2015-07-14MadPoo5D2FADEE44C8DF331802334
History
DateUserTypeResult
2023-10-09Sid & AndyNF-PM1
B1=18300000, B2=52845412620
2023-06-21JossNF-PM1
B1=1909949, B2=5395249860
2023-01-11JossNF-PM1
B1=1909949, B2=1890473970
2022-11-06tim sNF
no factor from 2^68 to 2^69
2022-08-11masserNF-PP1
Start=2/7, B1=1500000, B2=54000000
2019-04-27chuenkitNF
no factor from 2^67 to 2^68
2017-12-07mikrNF-PM1
B1=8000000, B2=320000000, E=12
2017-03-15Smok_bmv NF
no factor from 2^66 to 2^67
2015-09-01ramgeisNF
no factor from 2^65 to 2^66
2015-07-14MadPooC-LL
5D2FADEE44C8DF33
2015-05-19monstNF
no factor from 2^64 to 2^65
2015-05-18omylistNF
no factor from 2^63 to 2^64
2011-06-16kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2011-03-09GrunwalderGIMPNF
no factor from 2^62 to 2^63
2011-03-09GrunwalderGIMPNF
no factor from 2^61 to 2^62
2009-05-27Architects CubedNF
no factor from 2^60 to 2^61