86 166 259 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 =	700000
B2 =	13825000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-07-22	Milwizzle	F87D89B4ED6D61D7	0	1	3
Verified	Certified Good Power=9	2025-03-29	Mirra	F87D89B4ED6D61D7	0	1	3

History

Date	User	Type	Result
2025-03-29	Stephan Grupp	CERT	Proof certified good
2025-03-29	Mirra	C-PRP	F87D89B4ED6D61D7 Proof Certified Good Proof Power: 9
2018-07-22	Milwizzle	C-PRP	F87D89B4ED6D61D7
2018-02-23	Oliver Kruse	NF-PM1	B1=700000, B2=13825000, E=12
2018-01-13	JC	NF	no factor TF: 75-76
2017-12-13	Brian Beuning	NF	no factor TF: 74-75
2017-05-24	-anonymous-	NF	no factor TF: 73-74
2017-03-28	Judge Hale	NF	no factor TF: 72-73
2017-03-28	Judge Hale	NF	no factor TF: 71-72
2013-11-14	PascalBieri	NF	no factor TF: 70-71
2013-03-25	-anonymous-	NF	no factor TF: 69-70
2013-03-09	Lazu	NF	no factor TF: 68-69
2013-03-07	Zsolti	NF	no factor TF: 67-68
2013-03-06	-anonymous-	NF	no factor TF: 66-67
2011-03-04	Michael C	NF	no factor TF: 65-66
2010-11-20	Architects Cubed	NF	no factor TF: 64-65