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
8999
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
P-1
B1 = 65000000000
B2 = 251099672798124150
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000013213 / 40830
Estimated T-Level: 51.6 ⓘ
TF below 2^166 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown3C150Unknown,(aka U)
VerifiedGeorge Woltman6AACEAADE737BC150Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. Beesley6AACEAADE737BC150Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂6AACEAADE737BC153162Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2023-08-18masserNF-PP1Start=6/5, B1=920000000, B2=164680000000
2023-07-25JacobZNF-PM1B1=65000000000, B2=251099672798124150
2023-07-10masserNF-PP1Start=125/71, B1=920000000, B2=36800000000
2022-06-15Anton RepkoNFno factor TF: 64-66
2021-05-13ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-01-01Ruslan BorisovNFno factor TF: 64-65
2018-10-16snme2pm1NFno factor TF: 63-64
2017-01-03mikrNF-PM1B1=60000000000, B2=4800000000000, E=12
2016-11-10-anonymous-NF-PM1B1=100000000000, B2=1000000000000, E=12
2016-11-10-anonymous-NF-PM1B1=40000000000, B2=400000000000, E=12
2016-11-06snme2pm1NFno factor TF: 62-63
2016-11-05-anonymous-NF-PM1B1=20000000000, B2=200000000000, E=12
2016-02-23LaurVNFno factor TF: 57-58
2015-08-13Sid & AndyNFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LL6AACEAADE737BC15
2014-02-09c10ck3rNF-PM1B1=10000000000, B2=200000000000, E=12
2012-11-08bcp19NFno factor TF: 60-61
2010-08-10chalsallNFno factor TF: 59-60
2010-08-10chalsallNFno factor TF: 58-59
2003-02-24-anonymous-NF-PM1B1=4290000000
2002-12-16-anonymous-NFno factor TF: 1-57
2002-10-26-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-31-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-15-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2001-09-16-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-23-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-07-25-anonymous-NFno factor TF: 1-56
2000-03-01-anonymous-NFno factor TF: 54-55
1999-12-30-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53