8 333 807 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
90735284993219423911	20	66.3	old
1825159835959777654097	22	70.6	2002-09-07 00:00:00

Status	Date	User	Residue	Shift	Software
Factored	1999-11-10	Jerry Moseley	D6E2C489D4A9D347	649046	Windows,Prime95,v18,(aka WU1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-15	Justine V.	55AA485F573E66DB	2	7654381	5	3
Verified	PRP without proof (not generated)	2020-04-23	oodaira	55AA485F573E66DB	2	3451191	5	3

History

Date	User	Type	Result
2024-05-10	Stef42	NF-PM1	B1=1025000, B2=1519818300
2020-04-23	oodaira	C-PRP	M8333807/90735284993219423911/1825159835959777654097 : 55AA485F573E66DB
2018-10-15	Justine V.	C-PRP	M8333807/90735284993219423911/1825159835959777654097 : 55AA485F573E66DB
2008-07-15	George Woltman	F-ECM	Factor: 165606397873988038838810681917873368913367
2002-09-07	Team Prime Rib	F-PM1	Factor: 165606397873988038838810681917873368913367
2002-09-07	Team Prime Rib	NF	no factor TF: 1-64
1999-11-10	J Moseley	C-LL	D6E2C489D4A9D347
1999-06-06	-anonymous-	NF	no factor TF: 1-63
1998-12-27	-anonymous-	NF	no factor TF: 1-62
1998-09-27	-anonymous-	NF	no factor TF: 1-61