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
42142069TF
No factors below 273
TF target 272
P-1
B1 = 760000
B2 = 21000000
LL
StatusDateUserResidueShift
Bad2009-05-06ahmerali5CDC4A2701009D3232406242
Verified2017-12-11endless_mike800B03CBA94E2DBE4003747
Verified2017-12-26Patrik Johansson800B03CBA94E2DBE36993208
History
DateUserTypeResult
2020-06-15Sid & AndyNF
no factor from 2^72 to 2^73
2018-03-12riccardo ubertiNF-PM1
B1=760000, B2=21000000, e=12
2017-12-26Patrik JohanssonC-LL
800B03CBA94E2DBE
2017-12-11endless_mikeC-LL
800B03CBA94E2DBE
2015-09-13AirSquirrelsNF
no factor from 2^71 to 2^72
2015-03-04Mark RoseNF
no factor from 2^70 to 2^71
2015-01-31BdotNF
no factor from 2^69 to 2^70
2009-05-06ahmeraliC-LL
5CDC4A2701009D32
2009-03-17ahmeraliNF-PM1
B1=380000, B2=1900000
2009-03-15ahmeraliNF
no factor to 2^69