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
19013Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 266
TF target 244
TF below 2^161 is very unlikely to find new factors due to ECM effort.
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 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown4E420
VerifiedGeorge Woltman7DA62B0547C74E420
VerifiedBrian J. Beesley7DA62B0547C74E420
Verified2015-04-11MadPoo7DA62B0547C74E422656
History
DateUserTypeResult
2024-09-25-Anonymous-NF-PM1
B1=1000000000000, B2=1402034650733706990
2023-08-27masserNF-PP1
Start=6/5, B1=400000000, B2=71600000000
2023-07-08masserNF-PP1
Start=188/47, B1=400000000, B2=16000000000
2022-05-13-Anonymous-NF-PM1
B1=100000000000, B2=80107051974399450
2022-04-25Ruslan BorisovNF
no factor from 2^65 to 2^66
2021-05-10ATHNF-PP1
Start=2/7, B1=1000000000, B2=241000000000
2021-02-20Ruslan BorisovNF
no factor from 2^64 to 2^65
2018-09-17James HintzNF-PM1
B1=34151603279, B2=2595521849204, E=12
2018-03-28snme2pm1NF
no factor from 2^63 to 2^64
2016-12-21James HintzNF-PM1
B1=1808765006, B2=112143430372, E=12
2016-08-31Sid & AndyNF
no factor from 2^62 to 2^63
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-09-08snme2pm1NF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
7DA62B0547C74E42
2013-01-12SRJ2877NF-PM1
B1=24250000000, B2=50000000000, E=12
2012-12-25bcp19NF
no factor from 2^60 to 2^61
2010-06-27George WoltmanNF
no factor from 2^59 to 2^60
2010-06-27George WoltmanNF
no factor from 2^58 to 2^59