85 230 989 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 =	12920000

Status	Date	User	Residue	Shift	Type	Base
Verified	2018-04-18	ky0uraku	144486FC8E27A030	10021205	1	3
Verified	2022-04-05	Brian V.	144486FC8E27A030	0	1	3

History

Date	User	Type	Result
2022-04-05	Steve Jacobson	CERT	PRP Certification CERT proof power = 8 Proof certified good
2022-04-05	Brian V.	C-PRP	144486FC8E27A030 PRP proof power = 8 PRP: Verified Proof certified good
2018-04-18	ky0uraku	C-PRP	144486FC8E27A030 PRP: Verified PRP without proof (not generated)
2017-12-31	csaba	NF-PM1	B1=680000, B2=12920000, E=6
2017-08-20	TheJudger	NF	no factor from 2^75 to 2^76
2017-08-20	TheJudger	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
2015-02-11	monst	NF	no factor from 2^70 to 2^71
2014-09-18	-Anonymous-	NF	no factor from 2^69 to 2^70
2014-04-11	Preben S	NF	no factor from 2^68 to 2^69
2013-08-13	Tobias Sch	NF	no factor from 2^67 to 2^68
2013-02-28	wangyun183	NF	no factor from 2^66 to 2^67
2013-02-12	E.Lechner	NF	no factor from 2^65 to 2^66
2010-11-25	Architects Cubed	NF	no factor from 2^64 to 2^65