84 660 991 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 =	675000
B2 =	13331250

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2019-04-21	ky0uraku	EB8F55F2BCDD0A68	41936815	1	3
Verified	Certified Good Power=8	2022-02-08	ATH	EB8F55F2BCDD0A68	0	1	3

History

Date	User	Type	Result
2022-02-09	Massimo Cappelli (ik5pwa)	CERT	Proof certified good
2022-02-08	ATH	C-PRP	EB8F55F2BCDD0A68 Proof Certified Good Proof Power: 8
2019-04-27	ATH	NF	no factor TF: 63-64
2019-04-27	ATH	NF	no factor TF: 1-63
2019-04-21	ky0uraku	C-PRP	EB8F55F2BCDD0A68
2017-11-26	Oliver Kruse	NF-PM1	B1=675000, B2=13331250, E=12
2017-05-28	TheJudger	NF	no factor TF: 75-76
2017-05-18	1997rj7	NF	no factor TF: 74-75
2017-05-05	-anonymous-	NF	no factor TF: 73-74
2017-02-02	Judge Hale	NF	no factor TF: 71-72
2017-02-02	Judge Hale	NF	no factor TF: 72-73
2014-03-04	-anonymous-	NF	no factor TF: 70-71
2014-02-12	PascalBieri	NF	no factor TF: 69-70
2014-02-09	PascalBieri	NF	no factor TF: 68-69
2013-03-05	Jens Pedersen	NF	no factor TF: 67-68
2013-02-28	-anonymous-	NF	no factor TF: 66-67
2012-08-29	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-24	Architects Cubed	NF	no factor TF: 64-65