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
2427911Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 263
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 12000000
B2 = 46964318940
ECM
DigitsB1Curves
2550000280 / 280
3025000072 / 640
Estimated T-Level: 25.6 ⓘ
LL
StatusDateUserResidueShift
VerifiedPaul F. Bird7BBF7E19069775550
Verified1999-04-23Richard B. Woods7BBF7E1906977555830036
Verified2018-05-21kkmrkkblmbrbk7BBF7E19069775551300845
History
DateUserTypeResult
2022-08-27Wentao HuangNF-PM1
B1=12000000, B2=46964318940
2022-07-19Kevin_9611NF-PM1
B1=138000, B2=4359000, E=6
2018-05-21kkmrkkblmbrbkC-LL
7BBF7E1906977555
2015-12-30ramgeisNF
no factor from 2^70 to 2^71
2014-03-08Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-03-08Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-03-08Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-03-08Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-03-08Never Odd Or EvenNF
no factor from 2^65 to 2^66
2008-11-26Richard B. WoodsNF-PM1
B1=10000000
2008-11-26Richard B. WoodsNF
no factor to 2^65
2008-11-12Richard B. WoodsNF-PM1
B1=8000000
2008-11-12Richard B. WoodsNF-PM1
B1=6000000
2008-11-12Richard B. WoodsNF-PM1
B1=5000000