4 441 207 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
2930857277563654592939730252141329	34	111.2	2016-10-25 18:44:03

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	60 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Phil Brett	2A87CACCED31DA54	0
Verified (Factored)	1999-12-08	Ullrich Heinemann	2A87CACCED31DA54	1233442

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	DB6244702C1C93E0	1	0	1	3
Verified	2018-02-12	ATH	DB6244702C1C93E0	1	1638978	1	3

P-1 factors

Date	Factor	B1	B2
2016-10-25	2930857277563654592939730252141329	1800000	0

History

Date	User	Type	Result
2022-09-09	USAFSS	NF-PM1	B1=280000, B2=145842840
2018-02-12	ATH	C-PRP	M4441207/2930857277563654592939730252141329 : DB6244702C1C93E0 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4441207/2930857277563654592939730252141329 : DB6244702C1C93E0 PRP: Verified PRP without proof (not generated)
2016-10-25	mikr	F-PM1	Factor: 2930857277563654592939730252141329 / (P-1, B1=1800000)
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-06-23	snme2pm1	NF	no factor from 2^65 to 2^66
2014-09-13	monst	NF	no factor from 2^64 to 2^65
2014-09-07	Jayder	NF	no factor from 2^63 to 2^64
2012-05-03	Squeeky_Squirrel	NF-PM1	B1=135000, B2=2733750, E=6
2012-02-03	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-03	Architects Cubed	NF	no factor from 2^61 to 2^62
2009-08-09	Carsten Kossendey	NF-PM1	B1=25000, B2=356250