7 174 021 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
28642713731423451329	20	64.6	2011-12-24 03:46:14

Status	Date	User	Residue	Shift
Verified (Factored)	1999-07-12	David Newhall	0C00F6F304BC2BD4	3589411
Verified (Factored)	1999-09-07	CYBERSYMETRIX	0C00F6F304BC2BD4	6787036

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-02-17	Oliver Kruse	E901475AD72F29B9	1	1519560	5	3
Verified	2019-03-31	kkmrkkblmbrbk	E901475AD72F29B9	1	6644362	5	3

History

Date	User	Type	Result
2019-03-31	kkmrkkblmbrbk	C-PRP	M7174021/28642713731423451329 : E901475AD72F29B9 PRP: Verified PRP without proof (not generated)
2018-02-17	Oliver Kruse	C-PRP	M7174021/28642713731423451329 : E901475AD72F29B9 PRP: Verified PRP without proof (not generated)
2011-12-24	James Heinrich	F-PM1	Factor: 28642713731423451329
2009-06-24	Carsten Kossendey	NF-PM1	B1=40000, B2=610000, E=4