4 589 549 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
50059916844180339049	20	65.4	2015-07-03 22:30:13

ECM

Digits	B1	Curves
25	50000	6 / 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)		Klaus Kastens	065BC3A26C126039	4193404
Verified (Factored)	1998-04-15	Hector Yee	065BC3A26C126039	0
Bad	2002-02-24	Shane Sanford	90F8111F05C1A18C	4181406
Verified (Factored)	2002-04-14	Peter Schhneider	065BC3A26C126039	2177301

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	D6EA26D95FF87322	1	0	1	3
Verified	2018-02-25	Oliver Kruse	D6EA26D95FF87322	1	1690913	1	3

History

Date	User	Type	Result
2024-08-19	cramsey87	NF-PM1	B1=1400000, B2=1205424990
2018-02-25	Oliver Kruse	C-PRP	M4589549/50059916844180339049 : D6EA26D95FF87322 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4589549/50059916844180339049 : D6EA26D95FF87322 PRP: Verified PRP without proof (not generated)
2015-07-03	snme2pm1	F	Factor: 50059916844180339049 / TF: 65-66*
2015-01-06	lycorn	NF	no factor from 2^64 to 2^65
2015-01-05	Jayder	NF	no factor from 2^63 to 2^64
2012-01-08	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-05	Squeeky_Squirrel	NF-PM1	B1=85000, B2=1572500, E=6
2010-08-15	markr	NF	no factor from 2^61 to 2^62