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

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Exponent Range:










MnStatusDetails
4721TF
No factors below 266
TF target 244
TF below 2^182 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 67000000000
B2 = 672059035159211700
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000028842 / 105362
Estimated T-Level: 56.4
LL
StatusDateUserResidueShift
VerifiedUnknown09100
VerifiedGeorge Woltman1C942BA6878F89100
VerifiedBrian J. Beesley1C942BA6878F89100
Verified2015-04-11MadPoo1C942BA6878F89102354
History
DateUserTypeResult
2023-08-15masserNF-PP1
Start=6/5, B1=1910000000, B2=341890000000
2023-07-10masserNF-PP1
Start=98/41, B1=1910000000, B2=76400000000
2023-05-28-Anonymous-NF-PM1
B1=67000000000, B2=672059035159211700
2022-06-21Anton RepkoNF
no factor from 2^64 to 2^66
2021-05-13ATHNF-PP1
Start=2/7, B1=1000000000, B2=241000000000
2021-02-04Ruslan BorisovNF
no factor from 2^64 to 2^65
2018-08-25snme2pm1NF
no factor from 2^63 to 2^64
2016-12-02snme2pm1NF
no factor from 2^62 to 2^63
2016-11-25-Anonymous-NF-PM1
B1=100000000000, B2=1000000000000, E=12
2016-04-17mikrNF-PM1
B1=30000000000, B2=2400000000000, E=12
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-06-21Sid & AndyNF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
1C942BA6878F8910
2015-02-12JayderNF-PM1
B1=2560040779, B2=163842609831, E=12
2012-09-29bcp19NF
no factor from 2^60 to 2^61
2011-04-29JossNF-PM1
B1=10000000000
2011-01-25monstNF
no factor from 2^58 to 2^60