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
250153Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 244
TF below 2^130 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 20000000000
B2 = 7007614050066630
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001447 / 9201
Estimated T-Level: 40.8
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski2D1D0
VerifiedUnknown6D1D0
VerifiedKen Kiefer0F2888B297646D1D0
VerifiedBrian J. Beesley0F2888B297646D1D0
VerifiedEivind Triel0F2888B297646D1D75817
Verified2016-06-01MadPoo0F2888B297646D1D215164
History
DateUserTypeResult
2023-09-06masserNF-PP1
Start=2/7, B1=30000000, B2=2370000000
2023-09-03masserNF-PP1
Start=118/59, B1=30000000, B2=2370000000
2023-09-02masserNF-PP1
Start=6/5, B1=30000000, B2=2370000000
2023-01-08-Anonymous-NF-PM1
B1=20000000000, B2=7007614050066630
2022-05-31-Anonymous-NF-PM1
B1=20000000000, B2=4001681579125230
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2022-02-01-Anonymous-NF-PM1
B1=1000000000, B2=200796797040840
2021-10-03Anton RepkoNF-PP1
Start=6/5, B1=500000000, B2=50000000000
2020-11-02Anton RepkoNF
no factor from 2^69 to 2^70
2020-11-02Anton RepkoNF
no factor from 2^66 to 2^69
2019-12-31Gordon SpenceNF
no factor from 2^65 to 2^66
2019-05-12alexNF-PM1
B1=100000000, B2=2000000000, E=12
2018-03-15Gordon SpenceNF
no factor from 2^64 to 2^65
2016-06-01MadPooC-LL
0F2888B297646D1D
2016-05-13NumberwangNF-PM1
B1=2797, B2=69925
2016-01-27Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-27Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-25NRNF
no factor from 2^61 to 2^62
2015-01-15Denial140NF-PM1
B1=10000000, B2=250000000, E=12
2013-10-13David CampeauNF-PM1
B1=2555000, B2=74095000, E=12
2013-07-05Sid & AndyNF
no factor from 2^60 to 2^61
2012-02-26JossNF-PM1
B1=2503954
2011-07-24JossNF-PM1
B1=2003163
2011-02-07JossNF-PM1
B1=2000000
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59