84 679 747 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 =	12487500

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2019-04-22	George Woltman	C8E9B84E5863553A	68393621	1	3
Verified	Certified Good Power=10	2021-08-09	Kriesel	C8E9B84E5863553A	0	1	3

History

Date	User	Type	Result
2024-06-11	James Heinrich	NF	no factor TF: 68-69
2021-08-09	ANONYMOUS	CERT	Proof certified good
2021-08-09	Kriesel	C-PRP	C8E9B84E5863553A Proof Certified Good Proof Power: 10
2019-04-27	ATH	NF	no factor TF: 63-64
2019-04-27	ATH	NF	no factor TF: 1-63
2019-04-22	George Woltman	C-PRP	C8E9B84E5863553A
2017-12-17	EthanD	NF-PM1	B1=675000, B2=12487500
2017-07-03	Mark Rose	NF	no factor TF: 75-76
2017-07-01	Son Johan	NF	no factor TF: 74-75
2017-05-12	-anonymous-	NF	no factor TF: 73-74
2017-02-04	Judge Hale	NF	no factor TF: 72-73
2017-02-04	Judge Hale	NF	no factor TF: 71-72
2014-08-22	SMoffat	NF	no factor TF: 70-71
2014-03-19	SMoffat	NF	no factor TF: 69-70
2014-01-14	Carsten Kossendey	NF	no factor TF: 68-69
2013-12-22	Carsten Kossendey	NF	no factor TF: 67-68
2013-08-21	-anonymous-	NF	no factor TF: 66-67
2012-08-05	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-22	Architects Cubed	NF	no factor TF: 64-65