39 578 281 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
76123277945650006560367	23	76.0	2019-07-29 14:11:29

Status	Date	User	Residue	Shift
Verified (Factored)	2009-08-12	Gary Honey	1313CD428E5EB431	30631376
Verified (Factored)	2016-12-13	Sergey Nosov	1313CD428E5EB431	24799015

P-1 factors

Date	Factor	B1	B2
2019-07-29	76123277945650006560367	550000	11275000

History

Date	User	Type	Result
2024-05-30	LaurV	NF	no factor from 2^68 to 2^69
2019-07-29	Architects Cubed	F-PM1	Factor: 76123277945650006560367 / (P-1, B1=550000, B2=11275000, E=12)
2019-07-06	monst	NF	no factor from 2^71 to 2^72
2016-12-13	Sergey Nosov	C-LL	1313CD428E5EB431
2014-12-12	NickOfTime	NF	no factor from 2^70 to 2^71
2014-12-08	Mark Rose	NF	no factor from 2^69 to 2^70
2013-09-27	Carsten Kossendey	NF	no factor from 2^68 to 2^69
2009-08-12	Gary Honey	C-LL	1313CD428E5EB431