2 287 627 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
121765899152530624247479	24	76.7	2020-08-06 15:50:38

ECM

Digits	B1	Curves
25	50000	89 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Lloyd	A3A76B3B346236D1	0
Verified (Factored)	1999-03-15	Intech	A3A76B3B346236D1	619178
Verified (Factored)	2018-04-28	kkmrkkblmbrbk	A3A76B3B346236D1	487218

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-08-06	riccardo uberti	44808EB28DBEDF46	1	2000290	5	3
Verified	2020-08-07	kutens	44808EB28DBEDF46	1	377912	5	3

History

Date	User	Type	Result
2020-08-07	kutens	C-PRP	M2287627/121765899152530624247479 : 44808EB28DBEDF46 PRP: Verified PRP without proof (not generated)
2020-08-06	riccardo uberti	C-PRP	M2287627/121765899152530624247479 : 44808EB28DBEDF46 PRP: Verified PRP without proof (not generated)
2020-08-06	GAN	F-ECM	Factor: 121765899152530624247479 / (ECM curve 2, B1=50000, B2=5000000, Sigma=7401565296726747)
2019-10-08	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2019-07-24	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-28	kkmrkkblmbrbk	C-LL	A3A76B3B346236D1
2017-05-20	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-01	Joss	NF-PM1	B1=359983, B2=3599830, E=6
2015-11-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-12	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-12	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-01	Joss	NF-PM1	B1=141114
2014-06-11	Joss	NF-PM1	B1=113057
2013-08-20	David Campeau	NF	no factor from 2^62 to 2^63
2012-05-11	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-16	Oscar Östlin	NF-PM1	B1=85000, B2=1742500, E=6
2010-11-25	Oscar Östlin	NF-PM1	B1=75011
2010-11-15	Joss	NF-PM1	B1=20000
2010-11-07	Joss	NF-PM1	B1=15000
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61

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