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
19013
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2025-12-25-anonymous-ECM2025-12-252025-12-29
P-1
B1 = 1000000000000
B2 = 1402034650733706990
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016347 / 16550
Estimated T-Level: 49.9 ⓘ
TF below 2^161 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown4E420Unknown,(aka U)
VerifiedGeorge Woltman7DA62B0547C74E420Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. Beesley7DA62B0547C74E420Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂7DA62B0547C74E422656Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2024-09-25-anonymous-NF-PM1B1=1000000000000, B2=1402034650733706990
2023-08-27masserNF-PP1Start=6/5, B1=400000000, B2=71600000000
2023-07-08masserNF-PP1Start=188/47, B1=400000000, B2=16000000000
2022-05-13-anonymous-NF-PM1B1=100000000000, B2=80107051974399450
2022-04-25Ruslan BorisovNFno factor TF: 65-66
2021-05-10ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-02-20Ruslan BorisovNFno factor TF: 64-65
2018-09-17James HintzNF-PM1B1=34151603279, B2=2595521849204, E=12
2018-03-28snme2pm1NFno factor TF: 63-64
2016-12-21James HintzNF-PM1B1=1808765006, B2=112143430372, E=12
2016-08-31Sid & AndyNFno factor TF: 62-63
2016-02-23LaurVNFno factor TF: 57-58
2015-09-08snme2pm1NFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LL7DA62B0547C74E42
2013-01-12SRJ2877NF-PM1B1=24250000000, B2=50000000000, E=12
2012-12-25bcp19NFno factor TF: 60-61
2010-06-27George WoltmanNFno factor TF: 59-60
2010-06-27George WoltmanNFno factor TF: 58-59
2003-09-29-anonymous-NF-PM1B1=16777216, B2=1677721600, E=12
2003-09-29-anonymous-NF-PM1B1=8388608, B2=838860800, 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
2002-10-19-anonymous-NFno factor TF: 1-57
2002-07-14-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
2000-09-29-anonymous-NFno factor TF: 1-56
2000-03-08-anonymous-NFno factor TF: 53-54
1999-10-15-anonymous-NFno factor TF: 52-53