Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
3919
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
P-1
B1 = 2000000000000
B2 = 9223372036854775807
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
60260000000105362 / 105362
65800000000194238 / 194238
70240000000071012 / 350860
Estimated T-Level: 66.0
TF below 2^214 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown1D500Unknown,(aka U)
VerifiedGeorge WoltmanF0E8B4DAF31F1D500Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. BeesleyF0E8B4DAF31F1D500Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂F0E8B4DAF31F1D50531Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2025-06-20-anonymous-NF-PM1B1=4000000000000, B2=1.2016700776796E+19
2025-03-07Kamil GorskiNF-PM1B1=2000000000000, B2=9.2253318768493E+18
2024-10-13timc995NF-PM1B1=216000000000, B2=1000251878695529460
2023-08-13masserNF-PP1Start=6/5, B1=2360000000, B2=422440000000
2023-07-11masserNF-PP1Start=132/23, B1=2360000000, B2=94400000000
2023-05-15JacobZNF-PM1B1=67000000000, B2=674804699646066990
2022-06-12Anton RepkoNFno factor TF: 65-66
2021-05-13ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-01-29Anton RepkoNFno factor TF: 64-65
2018-06-03snme2pm1NFno factor TF: 63-64
2016-11-08snme2pm1NFno factor TF: 62-63
2016-05-14-anonymous-NF-PM1B1=200000000000, B2=2000000000000, E=12
2016-05-12-anonymous-NF-PM1B1=100000000000, B2=1000000000000, E=12
2016-02-23LaurVNFno factor TF: 57-58
2015-07-30snme2pm1NFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LLF0E8B4DAF31F1D50
2015-04-01mikrNF-PM1B1=30000000000, B2=2400000000000, E=12
2015-02-06JayderNF-PM1B1=3092987047, B2=201044158061, E=12
2012-09-29bcp19NFno factor TF: 60-61
2011-04-25JossNF-PM1B1=10000000000
2011-02-15monstNFno factor TF: 58-60
2003-01-25-anonymous-NFno factor TF: 1-57
2002-12-31-anonymous-NF-PM1B1=4290000000
2002-09-22-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-03-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-02-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2001-06-23-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-09-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-08-17-anonymous-NFno factor TF: 1-56
2000-02-09-anonymous-NFno factor TF: 54-55
1999-12-23-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53