91 225 999 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 2⁷⁷

TF target 2⁷⁵

P-1

B1 =	700000
B2 =	13125000

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-05-24	ky0uraku	8DF2054E2951E707	63050337	1	3
Verified	2025-02-19	GdS	8DF2054E2951E707	0	1	3

History

Date	User	Type	Result
2025-02-20	Xolotl	CERT	PRP Certification CERT proof power = 10 Proof certified good
2025-02-19	GdS	C-PRP	8DF2054E2951E707 PRP proof power = 10 PRP: Verified Proof certified good
2019-05-24	ky0uraku	C-PRP	8DF2054E2951E707 PRP: Verified PRP without proof (not generated)
2019-04-25	Brian Beuning	NF-PM1	B1=700000, B2=13125000, E=6
2019-03-03	TheJudger	NF	no factor from 2^76 to 2^77
2018-12-17	tServo	NF	no factor from 2^75 to 2^76
2018-12-17	tServo	NF	no factor from 2^74 to 2^75
2018-03-07	gcardona	NF	no factor from 2^73 to 2^74
2018-03-07	gcardona	NF	no factor from 2^72 to 2^73
2017-03-03	monst	NF	no factor from 2^71 to 2^72
2014-11-19	shauge	NF	no factor from 2^70 to 2^71
2014-03-11	hkskyp	NF	no factor from 2^69 to 2^70
2014-02-18	DPF51	NF	no factor from 2^68 to 2^69
2014-02-08	CSLatDD	NF	no factor from 2^67 to 2^68
2014-02-04	CSLatDD	NF	no factor from 2^66 to 2^67
2013-06-10	David Campeau	NF	no factor from 2^65 to 2^66
2010-12-29	Architects Cubed	NF	no factor from 2^64 to 2^65