85 022 921 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 Lucas-Lehmer test

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	680000
B2 =	13260000

Status	Date	User	Residue	Shift	Software
Verified	2019-01-13	patgie	E7BA667C0535F9E0	11393	CUDALucas v2.06beta
Verified	2026-01-24	ViliamF	E7BA667C0535F9E0	0	Windows 64-bit,prpll,v0.15-151-gaf36851

History

Date	User	Type	Result
2026-01-24	ViliamF	C-LL	E7BA667C0535F9E0
2019-01-13	patgie	C-LL	E7BA667C0535F9E0
2018-05-07	Architects Cubed	NF-PM1	B1=680000, B2=13260000, E=6
2017-07-16	TheJudger	NF	no factor TF: 74-75
2017-07-16	TheJudger	NF	no factor TF: 75-76
2017-03-02	-anonymous-	NF	no factor TF: 72-73
2017-03-02	-anonymous-	NF	no factor TF: 73-74
2017-03-02	-anonymous-	NF	no factor TF: 71-72
2013-07-22	SMoffat	NF	no factor TF: 70-71
2013-06-17	frmar	NF	no factor TF: 69-70
2013-02-28	Freaks32	NF	no factor TF: 68-69
2013-02-24	Freaks32	NF	no factor TF: 67-68
2013-01-28	E.Lechner	NF	no factor TF: 66-67
2012-10-06	kracker	NF	no factor TF: 65-66
2010-11-25	Architects Cubed	NF	no factor TF: 64-65