6 088 613 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
12121785888082681601969	23	73.4	2016-05-03 15:43:56

ECM

Digits	B1	Curves
25	50000	5 / 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)	1998-12-27	Marc Getty / Phil Fizur	80AE90CC1A44290D	0
Verified (Factored)	2001-03-25	TheSage	80AE90CC1A44290D	3971938

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	DBBD08348E7B29B9	1	0	1	3
Verified	2018-09-17	rucio	DBBD08348E7B29B9	1	381727	1	3

History

Date	User	Type	Result
2018-09-17	rucio	C-PRP	M6088613/12121785888082681601969 : DBBD08348E7B29B9 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M6088613/12121785888082681601969 : DBBD08348E7B29B9 PRP: Verified PRP without proof (not generated)
2016-05-03	nranks	F-ECM	Factor: 12121785888082681601969 / (ECM curve 2, B1=50000, B2=5000000)
2016-03-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-09	snme2pm1	NF	no factor from 2^65 to 2^66
2014-09-17	monst	NF	no factor from 2^64 to 2^65
2014-09-12	Nesowa	NF	no factor from 2^63 to 2^64
2013-03-21	Squeeky_Squirrel	NF-PM1	B1=195000, B2=4631250, E=6