8 609 149 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
123829599701044545457	21	66.7	2016-02-01 20:29:32

ECM

Digits	B1	Curves
25	50000	3 / 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
Bad	2000-04-12	Dave Tepper	FDB2B74735EC49F5	7341381
Verified (Factored)	2003-06-23	Ars Technica Team Prime Rib	F1539EA566B81594	7037451
Verified (Factored)	2003-11-16	A. Kromat	F1539EA566B81594	2666675

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-12-04	Oliver Kruse	318F4359AD6B426E	1	1480644	5	3
Verified	2020-08-05	LOBES	318F4359AD6B426E	1	8111613	5	3

History

Date	User	Type	Result
2020-08-05	LOBES	C-PRP	M8609149/123829599701044545457 : 318F4359AD6B426E PRP: Verified PRP without proof (not generated)
2018-12-04	Oliver Kruse	C-PRP	M8609149/123829599701044545457 : 318F4359AD6B426E PRP: Verified PRP without proof (not generated)
2016-02-01	snme2pm1	F	Factor: 123829599701044545457 / TF: 66-67*
2015-05-25	VictordeHollander	NF	no factor from 2^65 to 2^66
2013-11-04	David Campeau	NF	no factor from 2^64 to 2^65
2012-01-15	bcp19	NF-PM1	B1=100000, B2=1850000, E=6