3 616 621 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
56383765967057675544103	23	75.6	2021-08-12 06:41:30

ECM

Digits	B1	Curves
25	50000	27 / 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)		Roger Burton-West	4E6C36BE13E436FE	0
Bad	1999-08-07	Jonathan Champ	938A6287F1FE236D	477008
Verified (Factored)	2000-02-01	John Bafford	4E6C36BE13E436FE	3324121

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-08-12	/r/counting	1527596F2E1FA016	1	1480600	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
2021-08-13	curtisc	CERT	PRP Certification Proof certified good
2021-08-12	/r/counting	C-PRP	M3616621/56383765967057675544103 : 1527596F2E1FA016 PRP proof power = 7 PRP: Verified Proof certified good
2021-08-12	MarkS	F-ECM	Factor: 56383765967057675544103 / (ECM curve 5, B1=50000, B2=5000000, Sigma=8244342715138397)
2020-10-20	axn	NF	no factor from 2^68 to 2^69
2020-08-06	axn	NF-PM1	B1=30000000, B2=1000000000, E=12
2020-06-11	axn	NF-PM1	B1=30000000, B2=600000000, E=12
2018-11-26	TJAOI	NF	no factor from 2^67 to 2^68
2016-12-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-18	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-20	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-20	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-16	markr	NF-PM1	B1=240000, B2=6180000, E=12
2011-05-29	markr	NF	no factor from 2^61 to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-12	S485122	NF	no factor from 2^60 to 2^61

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