84 273 373 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 =	670000
B2 =	12897500

Status	Date	User	Residue	Shift	Software
Verified	2019-04-22	Kriesel	9A9B400374CD5468	42139876	CUDALucas v2.06beta
Verified	2025-12-03	Greg	9A9B400374CD5468	0	Linux64,prpll,v7.5

History

Date	User	Type	Result
2025-12-03	Greg	C-LL	9A9B400374CD5468
2019-04-24	ATH	NF	no factor TF: 1-63
2019-04-24	ATH	NF	no factor TF: 63-64
2019-04-22	Kriesel	C-LL	9A9B400374CD5468
2017-11-12	Brian Beuning	NF-PM1	B1=670000, B2=12897500, E=6
2017-04-19	TheJudger	NF	no factor TF: 74-75
2017-04-19	TheJudger	NF	no factor TF: 75-76
2017-04-02	gcardona	NF	no factor TF: 73-74
2016-12-18	Judge Hale	NF	no factor TF: 72-73
2013-12-12	SWL551	NF	no factor TF: 70-71
2013-12-12	SWL551	NF	no factor TF: 71-72
2013-12-12	SWL551	NF	no factor TF: 69-70
2013-12-12	SWL551	NF	no factor TF: 68-69
2013-12-12	SWL551	NF	no factor TF: 67-68
2013-02-18	Juergen Kampmeier	NF	no factor TF: 66-67
2012-08-13	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-24	Architects Cubed	NF	no factor TF: 64-65