85 574 261 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 =	466000
B2 =	170234610

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-06-18	ky0uraku	E21B7854B269EBFB	13205983	1	3
Verified	2024-01-21	GdS	E21B7854B269EBFB	0	1	3

History

Date	User	Type	Result
2024-01-21	COMPUTRON9001	CERT	PRP Certification CERT proof power = 10 Proof certified good
2024-01-21	GdS	C-PRP	E21B7854B269EBFB PRP proof power = 10 PRP: Verified Proof certified good
2022-11-20	Kriesel	NF-PM1	B1=466000, B2=170234610
2019-06-18	ky0uraku	C-PRP	E21B7854B269EBFB 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
2018-04-25	Yxinity	NF-PM1	B1=780000
2017-08-02	electron1897	NF	no factor from 2^75 to 2^76
2017-03-10	apocalypse	NF	no factor from 2^74 to 2^75
2017-03-10	apocalypse	NF	no factor from 2^73 to 2^74
2017-03-10	apocalypse	NF	no factor from 2^72 to 2^73
2017-03-10	apocalypse	NF	no factor from 2^71 to 2^72
2014-08-17	Ryan Propper	NF	no factor from 2^70 to 2^71
2013-03-14	NoWhereMan	NF	no factor from 2^69 to 2^70
2013-03-11	NoWhereMan	NF	no factor from 2^68 to 2^69
2013-03-07	NoWhereMan	NF	no factor from 2^67 to 2^68
2013-03-05	wangyun183	NF	no factor from 2^66 to 2^67
2013-03-01	wangyun183	NF	no factor from 2^65 to 2^66
2010-11-27	Architects Cubed	NF	no factor from 2^64 to 2^65