2 412 073 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
3343398128000985121609	22	71.5	2020-05-11 12:30:12

ECM

Digits	B1	Curves
25	50000	44 / 280

Estimated T-Level: 20.8 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Jim Blanking	E19B4700A7394B90	0
Verified (Factored)		Stephen Wood	E19B4700A7394B90	0
Verified (Factored)	1999-05-30	BitBucket	E19B4700A7394B90	746978

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-11	M Miller	1405829C4D90D561	1	2068095	5	3
Verified	2020-05-14	arnaud	1405829C4D90D561	1	628992	5	3

History

Date	User	Type	Result
2020-05-14	arnaud	C-PRP	M2412073/3343398128000985121609 : 1405829C4D90D561 PRP: Verified PRP without proof (not generated)
2020-05-11	M Miller	C-PRP	M2412073/3343398128000985121609 : 1405829C4D90D561 PRP: Verified PRP without proof (not generated)
2020-05-11	mnd9	F-ECM	Factor: 3343398128000985121609 / (ECM curve 2, B1=50000, B2=5000000, Sigma=1730878587683873)
2019-04-09	Yxinity	NF	no factor from 2^69 to 2^70
2019-02-25	Anton Repko	NF	no factor from 2^67 to 2^69
2017-07-02	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-10-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-03-13	mikr	NF-PM1	B1=3102822, B2=43439508, E=12
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-06-03	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-20	markr	NF-PM1	B1=95000, B2=1923750, E=6
2010-11-16	Joss	NF-PM1	B1=20000
2010-11-09	Joss	NF-PM1	B1=15000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61