3 688 189 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
39377257760788649363633	23	75.1	2021-11-29 17:20:57

ECM

Digits	B1	Curves
25	50000	28 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-06-14	Herb Savage	A13DE3D33C925B7E	0
Verified (Factored)	1999-08-16	Debbie Leight	A13DE3D33C925B7E	801082

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-12-06	LaurV	D59C879918F2B091	1	21793	5	3

History

Date	User	Type	Result
2022-05-25	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-04	Joss	NF-PM1	B1=90000
2021-12-06	Michel Yamagishi	CERT	PRP Certification Proof certified good
2021-12-06	LaurV	C-PRP	M3688189/39377257760788649363633 : D59C879918F2B091 PRP proof power = 7 PRP: Verified Proof certified good
2021-11-29	MarkS	F-ECM	Factor: 39377257760788649363633 / (ECM curve 2, B1=50000, B2=5000000, Sigma=5767480159489301)
2020-11-17	axn	NF-PM1	B1=30000000, B2=600000000, E=12
2020-10-28	axn	NF	no factor from 2^69 to 2^70
2020-10-28	axn	NF	no factor from 2^68 to 2^69
2018-08-06	TJAOI	NF	no factor from 2^67 to 2^68
2017-02-12	Joss	NF-PM1	B1=241228, B2=2412280, E=6
2017-02-08	Joss	NF-PM1	B1=201024, B2=2010240, E=6
2017-01-29	Joss	NF-PM1	B1=167520
2017-01-05	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-12-29	Joss	NF-PM1	B1=129600
2016-12-26	Joss	NF-PM1	B1=108000
2016-07-08	Joss	NF-PM1	B1=90000, B2=3285000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-20	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2012-02-18	Squeeky_Squirrel	NF-PM1	B1=90000, B2=1642500, E=6
2011-05-18	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-13	Carsten Kossendey	NF-PM1	B1=20000, B2=260000
2009-03-07	S485122	NF	no factor from 2^60 to 2^61

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