3 660 637 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
56121689088312748784207	23	75.6	2022-02-09 23:55:45

ECM

Digits	B1	Curves
25	50000	36 / 280

Estimated T-Level: 20.6 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Prather	C7B37A924239E026	0
Verified (Factored)	1999-01-02	Oddur Þór Þorkelsson	C7B37A924239E026	0
Verified (Factored)	1999-09-07	Steve Graham	C7B37A924239E026	3456436

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-02-10	Tucker Kao	E8EBBAB7C348A4BB	1	441531	5	3

History

Date	User	Type	Result
2022-09-09	Joss	NF-PM1	B1=1000000, B2=212677920
2022-04-06	Joss	NF-PM1	B1=1000000, B2=147585900
2022-02-10	curtisc	CERT	PRP Certification Proof certified good
2022-02-10	Tucker Kao	C-PRP	M3660637/56121689088312748784207 : E8EBBAB7C348A4BB PRP proof power = 7 PRP: Verified Proof certified good
2022-02-09	C.D.B.	F-ECM	Factor: 56121689088312748784207 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2640575534181352)
2021-02-21	axn	NF	no factor from 2^69 to 2^70
2020-11-10	axn	NF	no factor from 2^68 to 2^69
2020-09-26	axn	NF-PM1	B1=30000000, B2=600000000, E=12
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-07	Joss	NF-PM1	B1=241228, B2=2412280, E=6
2017-01-29	Joss	NF-PM1	B1=167520
2016-12-30	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-12-29	Joss	NF-PM1	B1=129600
2016-06-18	Joss	NF-PM1	B1=108000, B2=3285000, E=6
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
2015-01-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2012-02-03	Squeeky_Squirrel	NF-PM1	B1=90000, B2=1642500, E=6
2011-06-13	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-10	Carsten Kossendey	NF-PM1	B1=20000, B2=250000
2009-03-09	S485122	NF	no factor from 2^60 to 2^61

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