8 303 683 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
14235947906568139463	20	63.6	old

Status	Date	User	Residue	Shift	Software
Factored		Steven H. Norton	F81F558F1927AD9B	0	Mac,John Sweeney,v1.4,(aka J3)
Factored	1999-10-29	Louis Vandenberg	F81F558F1927AD9B	2859548	Windows,Prime95,v19,(aka WV1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-06	Oliver Kruse	813B99F31B31112B	1	4873951	5	3
Verified	PRP without proof (not generated)	2020-04-21	Nesowa	813B99F31B31112B	1	6454822	5	3

History

Date	User	Type	Result
2024-04-09	Stef42	NF-PM1	B1=3000000, B2=5957542500
2020-04-21	Nesowa	C-PRP	M8303683/14235947906568139463 : 813B99F31B31112B
2018-10-06	Oliver Kruse	C-PRP	M8303683/14235947906568139463 : 813B99F31B31112B
2006-04-14	David Campeau	F	Factor: 14235947906568139463
1999-10-29	-anonymous-	C-LL	F81F558F1927AD9B
1998-09-27	-anonymous-	NF	no factor TF: 1-63
1998-09-06	-anonymous-	NF	no factor TF: 1-62