81 395 311 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁵

TF target 2⁷⁵

P-1

B1 =	680000
B2 =	12920000

Status	Date	User	Residue	Shift
Unverified	2017-10-04	Evgeniy Zavialov	B4BC673EBC718F__	75550281

History

Date	User	Type	Result
2017-10-04	Evgeniy Zavialov	C-LL	B4BC673EBC718F__
2017-06-21	arnaud	NF-PM1	B1=680000, B2=12920000
2016-11-06	TheJudger	NF	no factor from 2^74 to 2^75
2016-11-06	TheJudger	NF	no factor from 2^73 to 2^74
2016-09-23	Judge Hale	NF	no factor from 2^72 to 2^73
2016-09-23	Judge Hale	NF	no factor from 2^71 to 2^72
2013-06-06	processinfo	NF	no factor from 2^70 to 2^71
2013-02-04	Smok_bmv	NF	no factor from 2^69 to 2^70
2013-01-30	rjbelans	NF	no factor from 2^68 to 2^69
2011-02-21	lexatref	NF	no factor from 2^67 to 2^68
2011-02-20	S00030	NF	no factor from 2^66 to 2^67
2011-02-19	S00030	NF	no factor from 2^65 to 2^66
2010-12-06	Architects Cubed	NF	no factor from 2^64 to 2^65