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
42171293TF
No factors below 273
TF target 272
P-1
B1 = 380000
B2 = 1900000
LL
StatusDateUserResidueShift
Verified2011-08-22curtisc7DB466FF5F078D743865519
Verified2017-12-17George Woltman7DB466FF5F078D7419677189
History
DateUserTypeResult
2022-05-04RichD0NF
no factor from 2^72 to 2^73
2017-12-17George WoltmanC-LL
7DB466FF5F078D74
2015-09-25AirSquirrelsNF
no factor from 2^71 to 2^72
2015-03-13Mark RoseNF
no factor from 2^70 to 2^71
2015-01-18Architects CubedNF
no factor from 2^69 to 2^70
2011-08-22curtiscC-LL
7DB466FF5F078D74
2009-03-26ahmeraliNF-PM1
B1=380000, B2=1900000
2009-03-22ahmeraliNF
no factor to 2^69