4 010 551 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
240780332242603245680386889	27	87.6	2017-10-30 11:27:22
407237826889134780574015247	27	88.4	2017-10-30 11:27:22

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)		Richard Belshoff	4EF2CC42670CAB5F	0
Verified (Factored)	1999-10-07	Tim Floore	4EF2CC42670CAB5F	1206771

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-31	Yaroslav Berezhko	BFA91FD5DD27B694	2	1008229	5	3
Verified	2017-10-31	Yaroslav Berezhko	BFA91FD5DD27B694	2	2551474	5	3
Verified	2018-03-16	kkmrkkblmbrbk	BFA91FD5DD27B694	2	139251	5	3

P-1 factors

Date	Factor	B1	B2
2017-10-30	98054859260121618226490172875560026858128383144896583	4600000	125000000

History

Date	User	Type	Result
2018-03-16	kkmrkkblmbrbk	C-PRP	M4010551/240780332242603245680386889/407237826889134780574015247 : BFA91FD5DD27B694 PRP: Verified PRP without proof (not generated)
2017-10-31	Yaroslav Berezhko	C-PRP	M4010551/240780332242603245680386889/407237826889134780574015247 : BFA91FD5DD27B694 PRP: Verified PRP without proof (not generated)
2017-10-31	Yaroslav Berezhko	C-PRP	M4010551/240780332242603245680386889/407237826889134780574015247 : BFA91FD5DD27B694 PRP: Verified PRP without proof (not generated)
2017-10-30	mikr	F-PM1	Factor: 98054859260121618226490172875560026858128383144896583 / (P-1, B1=4600000, B2=125000000, E=12)
2016-08-30	kkmrkkblmbrbk	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^63
2015-05-18	snme2pm1	NF	no factor from 2^65 to 2^66
2015-01-02	Nesowa	NF-PM1	B1=225000, B2=4556250, E=6
2013-10-07	David Campeau	NF	no factor from 2^64 to 2^65
2013-07-25	Jayder	NF	no factor from 2^63 to 2^64
2013-06-17	Squeeky_Squirrel	NF-PM1	B1=120000, B2=2280000, E=6
2010-01-03	Squeeky_Squirrel	NF-PM1	B1=40000, B2=660000, E=6
2009-11-06	GrunwalderGIMP	NF	no factor from 2^1 to 2^63