2 879 687 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
34889306556662927418117361	26	84.9	2011-02-25 05:51:32

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
Verified (Factored)		Mikael Billberg	7DB6591D222F24BC	0
Verified (Factored)	1999-05-09	Brian O'Kelley	7DB6591D222F24BC	1125874

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-23	Oliver Kruse	6408465207736781	1	1305839	5	3
Verified	2017-12-07	ATH	6408465207736781	1	1282064	5	3

History

Date	User	Type	Result
2023-04-16	Kevin_9611	NF-PM1	B1=240000, B2=279852300
2017-12-07	ATH	C-PRP	M2879687/34889306556662927418117361 : 6408465207736781 PRP: Verified PRP without proof (not generated)
2017-10-23	Oliver Kruse	C-PRP	M2879687/34889306556662927418117361 : 6408465207736781 PRP: Verified PRP without proof (not generated)
2011-02-25	Carsten Kossendey	F-PM1	Factor: 34889306556662927418117361
2011-01-27	Joss	NF-PM1	B1=50000
2010-12-24	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=161250
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61