81 186 661 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
897831992822649686813644561	27	89.5	2017-08-01 03:46:30

P-1 factors

Date	Factor	B1	B2
2017-08-01	897831992822649686813644561	685000	13700000

History

Date	User	Type	Result
2017-08-01	Architects Cubed	F-PM1	Factor: 897831992822649686813644561 / (P-1, B1=685000, B2=13700000, E=6)
2016-11-18	-Anonymous-	NF	no factor from 2^74 to 2^75
2016-11-18	-Anonymous-	NF	no factor from 2^73 to 2^74
2016-10-05	gcardona	NF	no factor from 2^72 to 2^73
2014-01-23	rlake	NF	no factor from 2^71 to 2^72
2013-11-02	SMoffat	NF	no factor from 2^70 to 2^71
2011-03-05	tmorrow	NF	no factor from 2^69 to 2^70
2011-03-01	Cloudy Water	NF	no factor from 2^68 to 2^69
2011-02-23	linded	NF	no factor from 2^67 to 2^68
2011-02-18	Thomas N	NF	no factor from 2^66 to 2^67
2011-02-15	Giselher	NF	no factor from 2^65 to 2^66
2010-12-12	Architects Cubed	NF	no factor from 2^64 to 2^65