98 556 193 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 =	715000
B2 =	13406250

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-08-12	ky0uraku	88ADF757578EAAA5	45162005	1	3

History

Date	User	Type	Result
2020-08-12	Jorge Coveiro	CERT	PRP Certification CERT proof power = 9 Proof certified good
2020-08-12	ky0uraku	C-PRP	88ADF757578EAAA5 PRP proof power = 9 PRP: Verified Proof certified good
2020-05-20	pew	NF-PM1	B1=715000, B2=13406250, E=12
2020-04-14	SRBase	NF	no factor from 2^77 to 2^78
2020-02-09	TheJudger	NF	no factor from 2^76 to 2^77
2020-02-09	TheJudger	NF	no factor from 2^75 to 2^76
2020-02-09	TheJudger	NF	no factor from 2^74 to 2^75
2019-11-20	bayanne	NF	no factor from 2^73 to 2^74
2019-04-09	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2018-06-18	masser	NF	no factor from 2^71 to 2^72
2013-08-12	Robish	NF	no factor from 2^70 to 2^71
2013-08-10	Le Comte	NF	no factor from 2^69 to 2^70
2013-07-31	SMoffat	NF	no factor from 2^68 to 2^69
2013-07-30	SMoffat	NF	no factor from 2^67 to 2^68
2013-07-28	SMoffat	NF	no factor from 2^66 to 2^67
2013-07-27	processinfo	NF	no factor from 2^65 to 2^66
2011-01-21	Architects Cubed	NF	no factor from 2^64 to 2^65