85 075 181 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	198082
B2 =	2971230

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-05-05	Mihai Preda	C17071546206B6FC	0	4	3
Verified	2022-01-13	_p95holder_	C17071546206B6FC	1220380	4	3

History

Date	User	Type	Result
2022-01-13	_p95holder_	C-PRP	C17071546206B6FC PRP: Verified PRP without proof (not generated)
2019-08-25	One Man	NF-PM1	B1=198082, B2=2971230, E=6
2019-05-05	Mihai Preda	C-PRP	C17071546206B6FC PRP: Verified PRP without proof (not generated)
2019-04-28	ATH	NF	no factor from 2^63 to 2^64
2019-04-28	ATH	NF	no factor from 2^1 to 2^63
2017-12-17	-Anonymous-	NF-PM1	B1=780000
2017-08-28	electron1897	NF	no factor from 2^75 to 2^76
2017-08-20	Brian Beuning	NF	no factor from 2^74 to 2^75
2017-03-02	-Anonymous-	NF	no factor from 2^73 to 2^74
2017-03-02	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-03-02	-Anonymous-	NF	no factor from 2^71 to 2^72
2014-08-30	tmorrow	NF	no factor from 2^70 to 2^71
2013-12-18	JMGarcia	NF	no factor from 2^69 to 2^70
2013-12-16	roemer2201	NF	no factor from 2^68 to 2^69
2013-02-28	Freaks32	NF	no factor from 2^67 to 2^68
2013-02-24	Freaks32	NF	no factor from 2^66 to 2^67
2013-01-27	E.Lechner	NF	no factor from 2^65 to 2^66
2010-11-24	Architects Cubed	NF	no factor from 2^64 to 2^65