4 727 557 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
14268824551550428270111	23	73.6	2017-02-02 17:50:59

ECM

Digits	B1	Curves
25	50000	7 / 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)	1998-03-31	Joe Franklin	90A275436318759D	0
Verified (Factored)	2000-05-31	Upper Silesia	90A275436318759D	3294920
Verified (Factored)	2000-10-15	Upper Silesia	90A275436318759D	2259662

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-19	kkmrkkblmbrbk	A5B69BCDBE2508D2	1	3057141	5	3
Verified	2018-03-13	MrSupp_CZ	A5B69BCDBE2508D2	1	2128871	5	3

History

Date	User	Type	Result
2018-03-13	MrSupp_CZ	C-PRP	M4727557/14268824551550428270111 : A5B69BCDBE2508D2 PRP: Verified PRP without proof (not generated)
2017-11-19	kkmrkkblmbrbk	C-PRP	M4727557/14268824551550428270111 : A5B69BCDBE2508D2 PRP: Verified PRP without proof (not generated)
2017-02-02	bayanne	F-ECM	Factor: 14268824551550428270111 / (ECM curve 1, B1=50000, B2=5000000)
2016-11-28	Squeeky_Squirrel	NF-PM1	B1=290000, B2=8700000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-07-12	snme2pm1	NF	no factor from 2^65 to 2^66
2015-01-11	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-11	VictordeHollander	NF	no factor from 2^63 to 2^64
2011-11-17	Squeeky_Squirrel	NF-PM1	B1=80000, B2=1360000, E=6
2011-10-25	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-06-11	markr	NF	no factor from 2^61 to 2^62
2009-09-18	Carsten Kossendey	NF-PM1	B1=25000, B2=387500