Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2521Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 266
TF target 244
TF below 2^219 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 6000000000000
B2 = 9223372036854775807
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
60260000000105362 / 105362
65800000000194238 / 194238
702400000000181057 / 350860
Estimated T-Level: 67.6
LL
StatusDateUserResidueShift
VerifiedUnknown59E90
VerifiedGeorge Woltman5FB1137F9314D9E90
VerifiedBrian J. Beesley5FB1137F9314D9E90
Verified2015-04-11MadPoo5FB1137F9314D9E91066
History
DateUserTypeResult
2024-10-18-Anonymous-NF-PM1
B1=6000000000000, B2=14002737613483518900
2023-08-10masserNF-PP1
Start=6/5, B1=3900000000, B2=698100000000
2023-07-03masserNF-PM1
B1=216000000000, B2=486755758363664790
2023-06-28masserNF-PP1
Start=76/29, B1=3900000000, B2=3896100000000
2022-05-04Anton RepkoNF
no factor from 2^65 to 2^66
2021-05-13ATHNF-PP1
Start=2/7, B1=1000000000, B2=241000000000
2021-03-01Anton RepkoNF
no factor from 2^64 to 2^65
2018-11-06JossNF-PM1
B1=200000000000, B2=18000000000000, E=12
2018-11-05JossNF-PM1
B1=200000000000, B2=15000000000000, E=12
2018-11-02JossNF-PM1
B1=200000000000, B2=7000000000000, E=12
2018-11-01JossNF-PM1
B1=200000000000, B2=4000000000000, E=12
2018-10-31JossNF-PM1
B1=200000000000, B2=2000000000000, E=12
2018-01-25snme2pm1NF
no factor from 2^63 to 2^64
2016-11-19snme2pm1NF
no factor from 2^62 to 2^63
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-06-28snme2pm1NF
no factor from 2^61 to 2^62
2015-06-22treborNF-PM1
B1=100000000000, B2=10000000000000, E=12
2015-04-11MadPooC-LL
5FB1137F9314D9E9
2012-05-22bcp19NF
no factor from 2^60 to 2^61
2010-12-04monstNF
no factor from 2^58 to 2^60
2010-02-16James HintzNF-PM1
B1=50000000000, B2=1250000000000, E=12