5 188 219 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
40816424581158171007	20	65.1	2010-12-16 17:08:04

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-12-13	Stephen Wood	FF5181F731AC36C9	0
Verified (Factored)	2000-06-11	Rich Armstrong	FF5181F731AC36C9	4169606

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	A9AD1F0434B32224	1	0	1	3
Verified	2018-05-25	kracker	A9AD1F0434B32224	1	4257234	1	3

History

Date	User	Type	Result
2023-04-18	Kevin_9611	NF-PM1	B1=270000, B2=149890020
2018-05-25	kracker	C-PRP	M5188219/40816424581158171007 : A9AD1F0434B32224 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5188219/40816424581158171007 : A9AD1F0434B32224 PRP: Verified PRP without proof (not generated)
2010-12-16	alan145	F-ECM	Factor: 40816424581158171007
2009-10-11	USAFSS	NF-PM1	B1=60000, B2=975000, E=6
2009-08-22	Carsten Kossendey	NF-PM1	B1=25000, B2=337500
2009-06-20	GrunwalderGIMP	NF	no factor from 2^62 to 2^63