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:





MnDetails
5471
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
6026000000051826 / 105362
Estimated T-Level: 57.5 ⓘ
TF below 2^186 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown55730Unknown,(aka U)
VerifiedGeorge WoltmanDBDAE2C9DD40D5730Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. BeesleyDBDAE2C9DD40D5730Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂DBDAE2C9DD40D5734338Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2025-04-07Kamil GorskiNF-PM1B1=2000000000000, B2=9.6771488142664E+18
2023-08-15masserNF-PP1Start=6/5, B1=1620000000, B2=289980000000
2023-07-10masserNF-PP1Start=152/11, B1=1620000000, B2=64800000000
2023-07-10-anonymous-NF-PM1B1=46000000000, B2=193133522175293700
2023-07-10masserNF-PM1B1=72000000000, B2=33634022196274500
2022-02-28Anton RepkoNFno factor TF: 64-66
2021-11-19nordiNF-PM1B1=10000000, B2=1000000000
2021-05-12ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-02-03Ruslan BorisovNFno factor TF: 64-65
2017-06-25snme2pm1NFno factor TF: 63-64
2016-11-27-anonymous-NF-PM1B1=100000000000, B2=1000000000000, E=12
2016-03-21mikrNF-PM1B1=40000000000, B2=2400000000000, E=12
2016-02-23LaurVNFno factor TF: 57-58
2015-12-29snme2pm1NFno factor TF: 62-63
2015-07-13Sid & AndyNFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LLDBDAE2C9DD40D573
2015-01-29JayderNF-PM1B1=2455663842, B2=157162485888, E=12
2012-09-29bcp19NFno factor TF: 60-61
2011-05-04JossNF-PM1B1=10000000000
2011-01-16monstNFno factor TF: 58-60
2003-01-16-anonymous-NF-PM1B1=4290000000
2002-12-31-anonymous-NFno factor TF: 1-57
2002-09-29-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-10-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-02-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2001-07-22-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-17-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-08-10-anonymous-NFno factor TF: 1-56
2000-02-16-anonymous-NFno factor TF: 54-55
1999-12-30-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53