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

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Exponent Range:










MnStatusDetails
15497TF
No factors below 266
TF target 244
TF below 2^154 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 1000000000000
B2 = 1401075893663576130
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000009377 / 16550
Estimated T-Level: 47.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown100C0
VerifiedGeorge Woltman37726C2E6F70900C0
VerifiedBrian J. Beesley37726C2E6F70900C0
Verified2015-04-11MadPoo37726C2E6F70900C5212
History
DateUserTypeResult
2023-08-22masserNF-PP1
Start=6/5, B1=500000000, B2=89500000000
2023-07-09masserNF-PP1
Start=115/61, B1=500000000, B2=20000000000
2023-06-14-Anonymous-NF-PM1
B1=1000000000000, B2=1401075893663576130
2022-04-01-Anonymous-NF-PM1
B1=100000000000, B2=100013732677278420
2021-12-18Ruslan BorisovNF
no factor from 2^65 to 2^66
2021-05-10ATHNF-PP1
Start=2/7, B1=1000000000, B2=241000000000
2019-05-07Anton RepkoNF
no factor from 2^64 to 2^65
2018-09-14snme2pm1NF
no factor from 2^63 to 2^64
2018-07-27James HintzNF-PM1
B1=22619325179, B2=1719068713604, E=12
2016-07-08Sid & AndyNF
no factor from 2^62 to 2^63
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-08-13snme2pm1NF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
37726C2E6F70900C
2013-04-28bcp19NF-PM1
B1=10000000000, B2=100000000000, E=12
2012-12-25bcp19NF
no factor from 2^60 to 2^61
2012-10-12JossNF-PM1
B1=544143324
2010-07-04George WoltmanNF
no factor from 2^59 to 2^60
2010-06-27George WoltmanNF
no factor from 2^58 to 2^59