560 639 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
14213709760411250961578540191	29	93.5	2019-04-08 23:23:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	319B	0
Verified (Factored)		Conrad Curry	9918B131A4C5B19B	0
Verified (Factored)	2002-06-23	Dennis Pope	9918B131A4C5B19B	464609
Verified (Factored)	2015-04-11	MadPoo	9918B131A4C5B19B	154090

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-09	matzetoni	A6189A9594620EB7	1	174471	5	3
Verified	2019-04-09	artorollo	A6189A9594620EB7	1	191286	5	3

P-1 factors

Date	Factor	B1	B2
2019-04-08	14213709760411250961578540191	10000000	400000000

History

Date	User	Type	Result
2021-08-17	ViliamF	NF-PM1	B1=15000000, B2=1500000000
2019-04-09	artorollo	C-PRP	M560639/14213709760411250961578540191 : A6189A9594620EB7 PRP: Verified PRP without proof (small exponent)
2019-04-09	matzetoni	C-PRP	M560639/14213709760411250961578540191 : A6189A9594620EB7 PRP: Verified PRP without proof (small exponent)
2019-04-08	alex	F-PM1	Factor: 14213709760411250961578540191 / (P-1, B1=10000000, B2=400000000, E=12)
2018-06-04	chuenkit	NF	no factor from 2^65 to 2^66
2017-11-19	BloodERazor	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^61
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-05	Sid & Andy	NF-PM1	B1=5606390, B2=168191700, E=12
2015-10-21	Bruno Victal	NF-PM1	B1=1600000, B2=66000000, E=12
2015-09-13	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-09-13	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-10	NR	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	9918B131A4C5B19B
2013-10-11	David Campeau	NF-PM1	B1=1355000, B2=36585000, E=12
2012-07-14	Joss	NF-PM1	B1=1121278
2012-03-05	Joss	NF-PM1	B1=879421
2011-08-20	Joss	NF-PM1	B1=703537
2011-06-26	Joss	NF-PM1	B1=362144