3 625 849 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
15308334479	11	33.8	old
217093495638463	15	47.6	2008-09-30 21:29:49
199269447556769778933377	24	77.4	2018-12-07 00:52:22

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-10	Oliver Kruse	46420B606DF2A0DB	2	3455	5	3
Verified (Factored)	2017-12-18	kkmrkkblmbrbk	46420B606DF2A0DB	2	3335355	5	3
Verified	2018-12-07	GunnarLu	46420B606DF2A0DB	3	2659581	5	3

History

Date	User	Type	Result
2022-09-09	Joss	NF-PM1	B1=1000000, B2=212677920
2022-03-25	Joss	NF-PM1	B1=1000000, B2=147585900
2022-03-20	Lisander Viaene	NF-PM1	B1=100000, B2=38206140
2022-03-19	Lisander Viaene	NF-PM1	B1=100000
2022-02-15	Joss	NF	no factor from 2^67 to 2^68
2018-12-07	GunnarLu	C-PRP	M3625849/15308334479/217093495638463/199269447556769778933377 : 46420B606DF2A0DB PRP: Verified PRP without proof (not generated)
2018-12-07	ATH	F-ECM	Factor: 199269447556769778933377 / (ECM curve 1, B1=50000, B2=5000000)
2017-12-18	kkmrkkblmbrbk	C-PRP	M3625849/15308334479/217093495638463 : 46420B606DF2A0DB PRP: Verified PRP without proof (not generated)
2017-11-10	Oliver Kruse	C-PRP	M3625849/15308334479/217093495638463 : 46420B606DF2A0DB PRP: Verified PRP without proof (not generated)
2008-09-30	markr	F	Factor: 217093495638463