84 423 217 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 =	13162500

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-07-15	Massimo Cappelli (ik5pwa)	A836565886A3191A	41077569	1	3
Verified	PRP without proof (not generated)	2021-11-18	ATH	A836565886A3191A	0	1	3

History

Date	User	Type	Result
2021-11-18	ATH	C-PRP	A836565886A3191A
2018-07-15	Massimo Cappelli (ik5pwa)	C-PRP	A836565886A3191A
2017-11-10	C. Williamson	NF-PM1	B1=675000, B2=13162500, E=12
2017-04-24	TheJudger	NF	no factor TF: 75-76
2017-04-24	TheJudger	NF	no factor TF: 74-75
2017-04-14	Brian Beuning	NF	no factor TF: 73-74
2017-01-25	Judge Hale	NF	no factor TF: 72-73
2017-01-25	Judge Hale	NF	no factor TF: 71-72
2014-03-14	46bit	NF	no factor TF: 70-71
2014-02-16	SMoffat	NF	no factor TF: 69-70
2014-02-15	SMoffat	NF	no factor TF: 68-69
2014-02-11	SMoffat	NF	no factor TF: 67-68
2013-02-20	Juergen Kampmeier	NF	no factor TF: 66-67
2012-08-13	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-08	Architects Cubed	NF	no factor TF: 64-65