81 152 107 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
1642066341149099031315725249	28	90.4	2017-07-14 23:26:34

P-1 factors

Date	Factor	B1	B2
2017-07-14	1642066341149099031315725249	680000	0

History

Date	User	Type	Result
2017-07-14	Smok_bmv	F-PM1	Factor: 1642066341149099031315725249 / (P-1, B1=680000)
2016-09-30	-Anonymous-	NF	no factor from 2^74 to 2^75
2016-09-30	-Anonymous-	NF	no factor from 2^73 to 2^74
2016-09-30	-Anonymous-	NF	no factor from 2^72 to 2^73
2016-09-30	-Anonymous-	NF	no factor from 2^71 to 2^72
2014-02-25	timc995	NF	no factor from 2^70 to 2^71
2014-02-04	GrunwalderGIMP	NF	no factor from 2^69 to 2^70
2014-02-02	JMGarcia	NF	no factor from 2^68 to 2^69
2013-01-27	Cow_tipping	NF	no factor from 2^67 to 2^68
2013-01-26	irreally9002	NF	no factor from 2^66 to 2^67
2011-03-27	Michael-Abstract	NF	no factor from 2^65 to 2^66
2010-12-02	Architects Cubed	NF	no factor from 2^64 to 2^65