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
153271Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 267
TF target 244
TF below 2^114 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 2147483648
B2 = 1177877301911310
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000653 / 4588
Estimated T-Level: 35.7
LL
StatusDateUserResidueShift
VerifiedGary Gostin111D0
VerifiedAmdahl 6 - 1989055C111D0
VerifiedBrian J. BeesleyBF8586CBC55C111D0
VerifiedEivind TrielBF8586CBC55C111D200
Verified2001-01-21Brian J. BeesleyBF8586CBC55C111D40474
History
DateUserTypeResult
2025-01-16yuriy_5-1NF-PM1
B1=2147483648, B2=1177877301911310
2023-05-29JacobZNF-PM1
B1=190000000, B2=16108641008460
2023-03-05masserNF-PP1
Start=6/5, B1=40000000, B2=1360000000
2023-02-24JossNF-PM1
B1=10001000, B2=250218308340
2023-02-18masserNF-PP1
Start=126/67, B1=40000000, B2=1320000000
2023-02-14masserNF-PP1
Start=2/7, B1=40000000, B2=1360000000
2022-12-12YxinityNF
no factor from 2^66 to 2^67
2022-11-04Kevin_9611NF-PM1
B1=5000000, B2=151877325600
2022-11-03Kevin_9611NF-PM1
B1=2500000, B2=100174404330
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-12-26YxinityNF
no factor from 2^65 to 2^66
2017-11-01BloodERazorNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-02-09Gordon SpenceNF
no factor from 2^63 to 2^64
2016-02-09Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-26NRNF
no factor from 2^61 to 2^62
2013-11-24lycornNF
no factor from 2^60 to 2^61
2013-05-31alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2013-05-30LaurVNF-PM1
B1=20000000, B2=260000000, e=6
2011-03-11JossNF-PM1
B1=10000000
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-10axnNF-PM1
B1=5000000, B2=200000000, E=12
2008-12-31Sturle SundeNF
no factor from 2^58 to 2^59