86 814 491 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 =	705000
B2 =	13923750

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-09-14	ky0uraku	863D5AA31F3F5660	84781838	1	3
Verified	2025-04-03	RichD0	863D5AA31F3F5660	0	1	3

History

Date	User	Type	Result
2025-04-03	V0rtex762	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-04-03	RichD0	C-PRP	863D5AA31F3F5660 PRP proof power = 8 PRP: Verified Proof certified good
2019-09-14	ky0uraku	C-PRP	863D5AA31F3F5660 PRP: Verified PRP without proof (not generated)
2018-04-30	TheJudger	NF-PM1	B1=705000, B2=13923750, E=12
2018-02-02	Strolling Jellyfish	NF	no factor from 2^75 to 2^76
2018-01-30	Brian Beuning	NF	no factor from 2^74 to 2^75
2017-06-15	-Anonymous-	NF	no factor from 2^73 to 2^74
2013-11-24	processinfo	NF	no factor from 2^72 to 2^73
2013-11-24	processinfo	NF	no factor from 2^71 to 2^72
2013-11-24	processinfo	NF	no factor from 2^70 to 2^71
2013-03-12	Brandon Shea	NF	no factor from 2^69 to 2^70
2013-03-11	g0b	NF	no factor from 2^68 to 2^69
2013-03-02	SMoffat	NF	no factor from 2^67 to 2^68
2013-03-02	SMoffat	NF	no factor from 2^66 to 2^67
2013-01-31	LaurV	NF	no factor from 2^65 to 2^66
2010-11-23	Architects Cubed	NF	no factor from 2^64 to 2^65