2 937 743 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
1982273114582358692063	22	70.7	2011-04-17 23:21:34

ECM

Digits	B1	Curves
25	50000	71 / 280

Estimated T-Level: 21.3 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael J. Kilfoyle	E7F5F894B01D1829	0
Verified (Factored)	1999-05-23	Andy Kohler	E7F5F894B01D1829	2087622

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-25	Oliver Kruse	F7574A297F14F4EC	1	708508	5	3
Verified	2017-12-09	kkmrkkblmbrbk	F7574A297F14F4EC	1	1858549	5	3

History

Date	User	Type	Result
2023-02-09	USAFSS	NF-PM1	B1=360000, B2=282695490
2017-12-09	kkmrkkblmbrbk	C-PRP	M2937743/1982273114582358692063 : F7574A297F14F4EC PRP: Verified PRP without proof (not generated)
2017-10-25	Oliver Kruse	C-PRP	M2937743/1982273114582358692063 : F7574A297F14F4EC PRP: Verified PRP without proof (not generated)
2011-04-17	FJCrodericck	F-ECM	Factor: 1982273114582358692063
2010-11-07	markr	NF-PM1	B1=105000, B2=2283750, E=6
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61