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
22787
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
P-1
B1 = 25000000000
B2 = 2500960708045800
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000010275 / 16550
Estimated T-Level: 48.1 ⓘ
TF below 2^155 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown32830Unknown,(aka U)
VerifiedGeorge WoltmanC7DC8443898FB2830Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. BeesleyC7DC8443898FB2830Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂C7DC8443898FB28318763Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2023-08-20masserNF-PP1Start=6/5, B1=320000000, B2=57280000000
2023-07-07masserNF-PP1Start=167/19, B1=320000000, B2=12800000000
2022-06-17ATHNF-PM1B1=25000000000, B2=2500960708045800
2021-05-07ATHNF-PP1Start=2/7, B1=500000000, B2=101500000000
2020-04-05YxinityNFno factor TF: 65-66
2020-04-05YxinityNFno factor TF: 65-66
2019-02-02YxinityNFno factor TF: 64-65
2019-02-02YxinityNFno factor TF: 64-65
2018-04-09YxinityNFno factor TF: 63-64
2018-04-08YxinityNFno factor TF: 63-64
2016-08-30Sid & AndyNFno factor TF: 62-63
2016-08-19c10ck3rNF-PM1B1=10000000000, B2=200000000000, E=12
2016-02-23LaurVNFno factor TF: 57-58
2015-04-11MadPoo 🙂C-LL
C7DC8443898FB283
2015-01-12mikrNF-PM1B1=1200000000, B2=70000000000, E=12
2013-11-17David CampeauNF-PM1B1=761580000
2013-11-14David CampeauNF-PM1B1=609265000
2013-10-30David CampeauNF-PM1B1=456950000
2013-10-23David CampeauNF-PM1B1=304635000
2012-03-23bcp19NFno factor TF: 61-62
2012-03-23bcp19NFno factor TF: 60-61
2009-02-26Sturle SundeNFno factor TF: 59-60
2009-01-20Sturle SundeNFno factor TF: 58-59
2003-09-29-anonymous-NF-PM1B1=8388608, B2=838860800, E=12
2003-09-29-anonymous-NF-PM1B1=16777216, B2=1677721600, E=12
2003-07-06-anonymous-NF-PM1B1=4194304, B2=419430400, E=12
2003-05-19-anonymous-NF-PM1B1=2097152, B2=209715200, E=12
2003-04-27-anonymous-NF-PM1B1=1048576, B2=104857600, E=48
2003-04-03-anonymous-NF-PM1B1=524288, B2=52428800, E=48
2003-03-27-anonymous-NF-PM1B1=262144, B2=26214400, E=30
2003-02-02-anonymous-NF-PM1B1=131072, B2=13107200, E=30
2002-11-09-anonymous-NFno factor TF: 1-57
2002-07-20-anonymous-NF-PM1B1=65536, B2=6553600, E=12
2002-06-09-anonymous-NF-PM1B1=32768, B2=3276800
2002-04-28-anonymous-NF-PM1B1=16384, B2=1638400
2001-08-18Alex KruppaNF-PM1B1=1000000, B2=100000000
2001-04-29-anonymous-NF-PM1B1=100000, B2=10000000
2000-09-29-anonymous-NFno factor TF: 1-56
2000-03-08-anonymous-NFno factor TF: 53-54
1999-10-21-anonymous-NFno factor TF: 52-53