86 279 257 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 =	680000
B2 =	12410000

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-08-07	ky0uraku	5BE2D1698B3B4B5E	45439309	1	3
Verified	2025-02-02	GdS	5BE2D1698B3B4B5E	0	1	3

History

Date	User	Type	Result
2025-02-02	John Airey	CERT	PRP Certification CERT proof power = 10 Proof certified good
2025-02-02	GdS	C-PRP	5BE2D1698B3B4B5E PRP proof power = 10 PRP: Verified Proof certified good
2019-08-07	ky0uraku	C-PRP	5BE2D1698B3B4B5E PRP: Verified PRP without proof (not generated)
2018-03-06	Smok_bmv	NF-PM1	B1=680000, B2=12410000
2018-01-28	TheJudger	NF	no factor from 2^75 to 2^76
2017-12-27	Brian Beuning	NF	no factor from 2^74 to 2^75
2017-04-02	Strolling Jellyfish	NF	no factor from 2^73 to 2^74
2017-04-02	Strolling Jellyfish	NF	no factor from 2^72 to 2^73
2017-04-02	Strolling Jellyfish	NF	no factor from 2^71 to 2^72
2013-06-18	Cow_tipping	NF	no factor from 2^70 to 2^71
2013-03-09	SMoffat	NF	no factor from 2^69 to 2^70
2013-03-09	SMoffat	NF	no factor from 2^68 to 2^69
2013-03-08	wangyun183	NF	no factor from 2^67 to 2^68
2013-03-01	Freaks32	NF	no factor from 2^66 to 2^67
2010-11-29	Michael C	NF	no factor from 2^65 to 2^66
2010-11-29	Michael C	NF	no factor from 2^64 to 2^65
2010-11-21	Architects Cubed	NF	no factor from 2^64 to 2^65