4 422 391 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
46353550780188665719441958449	29	95.2	2016-09-17 04:07:54

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-03-23	Eric Berkhout	4984AFBADE5046F5	0
Verified (Factored)	1999-11-10	Michael Lyons	4984AFBADE5046F5	1762349

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	AE5D4EC2CF0BFB51	1	0	1	3
Verified	2018-02-10	trebor	AE5D4EC2CF0BFB51	1	1131200	1	3

P-1 factors

Date	Factor	B1	B2
2016-09-17	46353550780188665719441958449	1800000	68000000

History

Date	User	Type	Result
2018-02-10	trebor	C-PRP	M4422391/46353550780188665719441958449 : AE5D4EC2CF0BFB51 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4422391/46353550780188665719441958449 : AE5D4EC2CF0BFB51 PRP: Verified PRP without proof (not generated)
2016-09-17	mikr	F-PM1	Factor: 46353550780188665719441958449 / (P-1, B1=1800000, B2=68000000, E=12)
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-06-22	snme2pm1	NF	no factor from 2^65 to 2^66
2014-08-30	lycorn	NF	no factor from 2^64 to 2^65
2014-08-27	Jayder	NF	no factor from 2^63 to 2^64
2012-04-02	Squeeky_Squirrel	NF-PM1	B1=135000, B2=2733750, E=6
2012-01-14	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-10-21	markr	NF	no factor from 2^61 to 2^62
2009-07-19	Carsten Kossendey	NF-PM1	B1=25000, B2=356250