7 147 691 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
235657356299792108023	21	67.7	2018-07-24 09:46:36

ECM

Digits	B1	Curves
25	50000	6 / 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)	2001-12-22	Stephen Joseph Lenehan	92BB3F3D9CA2ADD6	3624733
Verified (Factored)	2002-12-16	Per Jessen	92BB3F3D9CA2ADD6	5164524

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-26	_p95holder_	E27CCA71882605A9	1	707026	5	3
Verified	2019-03-26	kkmrkkblmbrbk	E27CCA71882605A9	1	5518128	5	3

History

Date	User	Type	Result
2019-03-26	kkmrkkblmbrbk	C-PRP	M7147691/235657356299792108023 : E27CCA71882605A9 PRP: Verified PRP without proof (not generated)
2018-07-26	_p95holder_	C-PRP	M7147691/235657356299792108023 : E27CCA71882605A9 PRP: Verified PRP without proof (not generated)
2018-07-24	ramgeis	F	Factor: 235657356299792108023 / TF: 67-68*
2016-10-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-21	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-02-06	lycorn	NF	no factor from 2^64 to 2^65
2014-02-02	Nesowa	NF	no factor from 2^63 to 2^64
2011-12-22	James Heinrich	NF-PM1	B1=135000, B2=2902500, E=6