4 149 659 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
12230150803971778008143	23	73.4	2015-07-10 16:21:24

ECM

Digits	B1	Curves
25	50000	6 / 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)		Jim Fare	B695653E082E4585	0
Verified (Factored)	2000-07-25	Stephan Grupp	B695653E082E4585	2665204

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	8AF15828055FC119	1	0	1	3
Verified	2018-01-13	ATH	8AF15828055FC119	1	3318103	1	3

P-1 factors

Date	Factor	B1	B2
2015-07-10	12230150803971778008143	1145000	30915000

History

Date	User	Type	Result
2023-05-08	USAFSS	NF-PM1	B1=339000, B2=231827310
2018-01-13	ATH	C-PRP	M4149659/12230150803971778008143 : 8AF15828055FC119 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4149659/12230150803971778008143 : 8AF15828055FC119 PRP: Verified PRP without proof (not generated)
2015-07-10	David Campeau	F-PM1	Factor: 12230150803971778008143
2015-06-04	snme2pm1	NF	no factor from 2^65 to 2^66
2013-10-29	David Campeau	NF	no factor from 2^64 to 2^65
2013-09-25	Jayder	NF	no factor from 2^63 to 2^64
2011-07-01	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-12-29	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-09-06	markr	NF-PM1	B1=90000, B2=1935000, E=6