12 574 579 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
199232394469926213905617	24	77.4	2016-04-05 02:32:51

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)	2002-01-15	Steve Spicer	D42999371802CA4A	11685736
Verified (Factored)	2004-11-22	Søren Vejlgaard Vedstesen	D42999371802CA4A	1262064

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-04-19	XZT	3D967E4521201BD5	1	11656647	5	3

History

Date	User	Type	Result
2023-10-25	nordi	NF-PM1	B1=500000, B2=430944150
2023-10-19	nordi	NF-PM1	B1=500000
2022-04-19	James Heinrich	CERT	PRP Certification Proof certified good
2022-04-19	XZT	C-PRP	M12574579/199232394469926213905617 : 3D967E4521201BD5 PRP proof power = 8 PRP: Verified Proof certified good
2016-04-05	bam	F-ECM	Factor: 199232394469926213905617 / (ECM curve 1, B1=50000, B2=5000000)
2015-03-25	Tha	NF	no factor from 2^66 to 2^67
2014-03-28	Nesowa	NF	no factor from 2^65 to 2^66
2013-06-18	lycorn	NF	no factor from 2^64 to 2^65