3 553 601 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
13173590008955891527	20	63.5	2011-12-16 06:48:38

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-11-14	Gary Untermeyer	0D0C823A1A252E91	0
Verified (Factored)	1999-07-26	Jeremy Pharoah	0D0C823A1A252E91	694790

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-09	Oliver Kruse	9743A26FB8747DFD	1	356233	5	3
Verified	2017-12-17	kkmrkkblmbrbk	9743A26FB8747DFD	1	429680	5	3

History

Date	User	Type	Result
2022-09-13	Joss	NF-PM1	B1=1000000, B2=130364850
2022-08-26	Joss	NF-PM1	B1=1000000
2022-05-19	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-01	Joss	NF-PM1	B1=100000
2017-12-17	kkmrkkblmbrbk	C-PRP	M3553601/13173590008955891527 : 9743A26FB8747DFD PRP: Verified PRP without proof (not generated)
2017-11-09	Oliver Kruse	C-PRP	M3553601/13173590008955891527 : 9743A26FB8747DFD PRP: Verified PRP without proof (not generated)
2011-12-16	Squeeky_Squirrel	F	Factor: 13173590008955891527
2011-06-29	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-07	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-16	S485122	NF	no factor from 2^60 to 2^61