2 442 289 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
465122005076461683653761	24	78.6	2020-04-25 20:42:08

ECM

Digits	B1	Curves
25	50000	39 / 280

Estimated T-Level: 20.7 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael Taylor	E1501C60010759FA	0
Verified (Factored)	1998-06-14	John Schuster	E1501C60010759FA	0
Verified (Factored)	1999-08-31	Stephen Wood	E1501C60010759FA	1963776

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-04-26	M Miller	FD6EC6525859EE59	1	2025044	5	3
Verified	2020-04-26	atrench	FD6EC6525859EE59	1	520994	5	3
Verified	2020-04-28	arnaud	FD6EC6525859EE59	1	1598016	5	3

History

Date	User	Type	Result
2020-04-28	arnaud	C-PRP	M2442289/465122005076461683653761 : FD6EC6525859EE59 PRP: Verified PRP without proof (not generated)
2020-04-26	atrench	C-PRP	M2442289/465122005076461683653761 : FD6EC6525859EE59 PRP: Verified PRP without proof (not generated)
2020-04-26	M Miller	C-PRP	M2442289/465122005076461683653761 : FD6EC6525859EE59 PRP: Verified PRP without proof (not generated)
2020-04-25	mnd9	F-ECM	Factor: 465122005076461683653761 / (ECM curve 3, B1=50000, B2=5000000, Sigma=1200645861321190)
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2017-07-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-01-19	mikr	NF-PM1	B1=1172000, B2=48000000, E=12
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-06-06	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-12	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61