2 771 491 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2356182102899130095261447	25	81.0	2020-10-13 06:34:10

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)		John Lyon	91F9E4851A9AD55C	0
Verified (Factored)	1999-05-02	fadi	91F9E4851A9AD55C	2437486
Verified (Factored)	2018-08-22	kkmrkkblmbrbk	91F9E4851A9AD55C	2720600

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-10-13	mrh	340B7C3E881B5F82	1	2053939	5	3

History

Date	User	Type	Result
2020-10-13	Ben Delo	CERT	PRP Certification Proof certified good
2020-10-13	mrh	C-PRP	M2771491/2356182102899130095261447 : 340B7C3E881B5F82 PRP proof power = 7 PRP: Verified Proof certified good
2020-10-13	mnd9	F-ECM	Factor: 2356182102899130095261447 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2285104416578188)
2019-02-24	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-22	kkmrkkblmbrbk	C-LL	91F9E4851A9AD55C
2017-10-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-02-25	Joss	NF-PM1	B1=294451, B2=2944510, E=6
2017-02-23	mikr	NF-PM1	B1=2700000, B2=84000000, E=12
2016-12-23	Joss	NF-PM1	B1=204480
2016-10-26	Joss	NF-PM1	B1=170400
2016-08-14	Joss	NF-PM1	B1=142000, B2=4730000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-06	omylist	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-19	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-30	markr	NF-PM1	B1=110000, B2=2365000, E=6
2010-11-10	Joss	NF-PM1	B1=15000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61

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