98 778 983 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 2⁷⁸

TF target 2⁷⁶

P-1

B1 =	720000
B2 =	13140000

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-08-14	ky0uraku	E00CBC4314ECD72C	12752755	1	3

History

Date	User	Type	Result
2020-08-14	Team_Inspector	CERT	PRP Certification CERT proof power = 9 Proof certified good
2020-08-14	ky0uraku	C-PRP	E00CBC4314ECD72C PRP proof power = 9 PRP: Verified Proof certified good
2020-05-30	MarkS	NF-PM1	B1=720000, B2=13140000, E=6
2020-04-17	SRBase	NF	no factor from 2^77 to 2^78
2020-02-12	TheJudger	NF	no factor from 2^76 to 2^77
2020-02-12	TheJudger	NF	no factor from 2^75 to 2^76
2020-02-12	TheJudger	NF	no factor from 2^74 to 2^75
2019-11-23	el grocco	NF	no factor from 2^73 to 2^74
2019-03-29	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2018-03-25	masser	NF	no factor from 2^71 to 2^72
2014-05-28	SMoffat	NF	no factor from 2^70 to 2^71
2014-05-22	Pgabor	NF	no factor from 2^69 to 2^70
2014-03-17	SMoffat	NF	no factor from 2^68 to 2^69
2013-08-16	Robish	NF	no factor from 2^67 to 2^68
2013-08-15	Le Comte	NF	no factor from 2^66 to 2^67
2013-07-31	David Campeau	NF	no factor from 2^65 to 2^66
2011-02-07	1997rj7	NF	no factor from 2^64 to 2^65