5 012 047 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
689575424319842111585012137	27	89.2	2018-07-13 13:15:18

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ken Kriesel	C56351039F73DC6C	0
Verified (Factored)	2000-07-03	TBWM	C56351039F73DC6C	1170255

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-18	_p95holder_	B4351FCC332429C2	1	18002	5	3
Verified	2018-07-18	ATH	B4351FCC332429C2	1	3191241	5	3

P-1 factors

Date	Factor	B1	B2
2018-07-13	689575424319842111585012137	3600000	0

History

Date	User	Type	Result
2018-07-18	ATH	C-PRP	M5012047/689575424319842111585012137 : B4351FCC332429C2 PRP: Verified PRP without proof (not generated)
2018-07-18	_p95holder_	C-PRP	M5012047/689575424319842111585012137 : B4351FCC332429C2 PRP: Verified PRP without proof (not generated)
2018-07-13	mikr	F-PM1	Factor: 689575424319842111585012137 / (P-1, B1=3600000)
2018-06-06	ramgeis	NF	no factor from 2^67 to 2^68
2016-11-16	Squeeky_Squirrel	NF-PM1	B1=300000, B2=9375000, E=12
2016-05-14	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^63
2015-07-23	snme2pm1	NF	no factor from 2^65 to 2^66
2014-11-10	Joss	NF-PM1	B1=67806
2014-08-30	lycorn	NF	no factor from 2^64 to 2^65
2014-08-29	kracker	NF	no factor from 2^63 to 2^64
2009-07-14	USAFSS	NF-PM1	B1=55000, B2=907500, E=6