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
4261TF
No factors below 266
TF target 244
TF below 2^214 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 76000000000
B2 = 761666906426476050
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
60260000000105362 / 105362
65800000000194238 / 194238
70240000000072979 / 350860
Estimated T-Level: 66.0
LL
StatusDateUserResidueShift
VerifiedUnknown5B9A0
VerifiedGeorge WoltmanC9BE94F718B35B9A0
VerifiedBrian J. BeesleyC9BE94F718B35B9A0
Verified2015-04-11MadPooC9BE94F718B35B9A76
History
DateUserTypeResult
2023-08-14masserNF-PP1
Start=6/5, B1=2150000000, B2=384850000000
2023-07-10masserNF-PP1
Start=84/13, B1=2150000000, B2=86000000000
2023-05-19-Anonymous-NF-PM1
B1=76000000000, B2=761666906426476050
2022-06-12Anton RepkoNF
no factor from 2^64 to 2^66
2021-05-12ATHNF-PP1
Start=2/7, B1=1000000000, B2=241000000000
2021-02-07Ruslan BorisovNF
no factor from 2^64 to 2^65
2019-11-12ZabeNF-PM1
B1=100000000003, B2=4000000000039, E=12
2018-06-26snme2pm1NF
no factor from 2^63 to 2^64
2016-12-15snme2pm1NF
no factor from 2^62 to 2^63
2016-05-17-Anonymous-NF-PM1
B1=100000000000, B2=1000000000000, E=12
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-06-19Sid & AndyNF
no factor from 2^61 to 2^62
2015-05-11mikrNF-PM1
B1=30000000000, B2=2400000000000, E=12
2015-04-11MadPooC-LL
C9BE94F718B35B9A
2015-02-07JayderNF-PM1
B1=3092987047, B2=201044158061, E=12
2012-09-29bcp19NF
no factor from 2^60 to 2^61
2011-04-26JossNF-PM1
B1=10000000000
2011-02-08monstNF
no factor from 2^58 to 2^60