Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
36919Factored
FactorDigitsBitsDate
14327785699268711650.3old
398238222441950406508057087192098278337121.62016-11-30 14:59:19
225832228764792196583703740659855138427687343140.72023-03-23 20:03:07
299734754464266183349789683679549479370201816264513906355181.02022-05-23 13:30:53
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000008716 / 9201
Estimated T-Level: 44.7
TF below 2^144 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse24F611444AAA17592013
Verified (Factored)2017-10-02kkmrkkblmbrbk24F611444AAA17592013
Verified (Factored)2017-12-07ATH24F611444AAA175922530513
Verified (Factored)2020-04-17Oliver Kruse71E889EBBC28B96E21154953
Verified (Factored)2022-05-23nordi71E889EBBC28B96E38953
Verified2023-03-23Naegi Makoto71E889EBBC28B96E42120653
P-1 factors
DateFactorB1B2
2016-11-3039823822244195040650805708719209827832000000003042115842738
2022-05-2329973475446426618334978968367954947937020181626451390632000000000401927737170960
History
DateUserTypeResult
2023-03-23Naegi MakotoC-PRP
M36919/1432778569926871/3982382224419504065080570871920982783/2997347544642661833497896836795494793702018162645139063/2258322287647921965837037406598551384276873 : 71E889EBBC28B96E
PRP: Verified
PRP without proof (small exponent)
2023-03-23Naegi MakotoF-ECM
Factor: 2258322287647921965837037406598551384276873 / (ECM curve 51, B1=11000000, B2=66988851930, Sigma=678083872848443)
2022-05-23nordiC-PRP
M36919/1432778569926871/3982382224419504065080570871920982783/2997347544642661833497896836795494793702018162645139063 : 71E889EBBC28B96E
PRP: Verified
PRP without proof (small exponent)
2022-05-23nordiF-PM1
Factor: 2997347544642661833497896836795494793702018162645139063 / (P-1, B1=2000000000, B2=401927737170960)
2022-04-10nordiNF-PM1
B1=2000000000
2021-05-12ATHNF-PP1
Start=2/7, B1=100000000, B2=10000000000
2020-04-17Oliver KruseC-PRP
M36919/1432778569926871/3982382224419504065080570871920982783 : 71E889EBBC28B96E
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M36919/1432778569926871/3982382224419504065080570871920982783 : 24F611444AAA1759
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M36919/1432778569926871/3982382224419504065080570871920982783 : 24F611444AAA1759
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M36919/1432778569926871/3982382224419504065080570871920982783 : 24F611444AAA1759
PRP without proof (not generated)
2016-11-30kkmrkkblmbrbkF-PM1
Factor: 3982382224419504065080570871920982783 / (P-1, B1=200000000, B2=3042115842738)
2016-10-28kkmrkkblmbrbkNF-PM1
B1=200000000, B2=5000000000, E=12