2 808 427 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1190791048302828626617	22	70.0	2020-09-27 05:28:15

ECM

Digits	B1	Curves
25	50000	38 / 280

Estimated T-Level: 20.7 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Earl Malmrose	195477753E59DC07	0
Verified (Factored)		Paul Renault	195477753E59DC07	0
Verified (Factored)	1999-05-02	David Allen	195477753E59DC07	134279

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-09-27	M Miller	F42C6A0149251C81	1	1094537	5	3

History

Date	User	Type	Result
2020-09-27	kawabe	CERT	PRP Certification Proof certified good
2020-09-27	M Miller	C-PRP	M2808427/1190791048302828626617 : F42C6A0149251C81 PRP proof power = 7 PRP: Verified Proof certified good
2020-09-27	GAN	F-ECM	Factor: 1190791048302828626617 / (ECM curve 1, B1=50000, B2=5000000)
2020-01-11	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-11-13	masser	NF-PM1	B1=3000000, B2=30000000, E=12
2019-11-12	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2018-12-30	chuenkit	NF	no factor from 2^67 to 2^68
2017-10-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-05-13	Joss	NF-PM1	B1=364000, B2=3640000, E=6
2016-12-29	Joss	NF-PM1	B1=218400
2016-08-01	Joss	NF-PM1	B1=182000, B2=4895000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-11	ramgeis	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
2012-02-24	markr	NF	no factor from 2^61 to 2^62
2010-12-19	markr	NF-PM1	B1=110000, B2=2447500, E=6
2010-11-12	Joss	NF-PM1	B1=15000
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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