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
15135397Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 277
TF target 269
TF below 2^95 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 45983977
B2 = 6023900987
ECM
DigitsB1Curves
2550000280 / 280
30250000634 / 640
Estimated T-Level: 30.0 ⓘ
LL
StatusDateUserResidueShift
Bad2002-04-14Dan KrugerBCA8BB094E2A4C569455228
Verified2005-04-26Ars Technica Team Prime Rib20FEFE5D788B739E623952
Verified2006-05-12roberto20FEFE5D788B739E2856086
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-02-14kkmrkkblmbrbkE4D3E69DCAE3D00F189831013
History
DateUserTypeResult
2025-02-14Generic Username 3485CERT
PRP Certification
CERT proof power = 8
Proof certified good
2025-02-14kkmrkkblmbrbkC-PRP
E4D3E69DCAE3D00F
PRP proof power = 8
PRP: Verified
Proof certified good
2024-06-18kkmrkkblmbrbkNF-PP1
Start=6/5, B1=45983977, B2=45937993023
2024-05-22kkmrkkblmbrbkNF
no factor from 2^76 to 2^77
2024-05-20kkmrkkblmbrbkNF
no factor from 2^75 to 2^76
2024-05-20kkmrkkblmbrbkNF
no factor from 2^74 to 2^75
2024-05-19kkmrkkblmbrbkNF
no factor from 2^73 to 2^74
2022-10-16ATHNF-PP1
Start=2/7, B1=1000000, B2=29000000
2022-02-19PraxeisNF
no factor from 2^72 to 2^73
2021-10-15-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2021-07-05Oliver KruseNF-PM1
B1=45983977, B2=6023900987, E=24
2021-06-29lycornNF
no factor from 2^69 to 2^70
2017-10-11ramgeisNF
no factor from 2^68 to 2^69
2017-01-23ConductorNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-05-14NesowaNF
no factor from 2^66 to 2^67