84 649 493 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with PRP test

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	900000
B2 =	609879930

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2019-01-10	irowiki	BCF0B9666B2FA577	30520172	1	3
Verified	Certified Good Power=8	2022-02-05	ATH	BCF0B9666B2FA577	0	1	3

History

Date	User	Type	Result
2025-06-22	Jason Lynch	NF-PM1	B1=900000, B2=609879930
2022-02-05	Andre	CERT	Proof certified good
2022-02-05	ATH	C-PRP	BCF0B9666B2FA577 Proof Certified Good Proof Power: 8
2019-01-10	irowiki	C-PRP	BCF0B9666B2FA577
2017-11-27	Yxinity	NF-PM1	B1=775000
2017-05-26	Mark Rose	NF	no factor TF: 75-76
2017-05-24	Brian Beuning	NF	no factor TF: 74-75
2017-05-19	-anonymous-	NF	no factor TF: 73-74
2017-02-01	Judge Hale	NF	no factor TF: 72-73
2017-02-01	Judge Hale	NF	no factor TF: 71-72
2014-08-15	kutens	NF	no factor TF: 70-71
2014-01-15	Preben S	NF	no factor TF: 69-70
2013-12-20	Valery Eropkin	NF	no factor TF: 68-69
2013-03-28	W. Oleinik	NF	no factor TF: 67-68
2013-03-10	W. Oleinik	NF	no factor TF: 66-67
2012-08-21	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-24	Architects Cubed	NF	no factor TF: 64-65