3 884 411 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
16201535337650459551722450080534790647	38	123.6	2022-05-14 06:32:37

ECM

Digits	B1	Curves
25	50000	26 / 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)	1998-05-08	Filip Verberckmoes	0AAF00FAE4EB8989	0
Verified (Factored)	1999-08-31	Albrecht Heeffer	0AAF00FAE4EB8989	3678271

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-05-14	aperson1	6F568CE94F64CB7C	1	3423180	5	3

P-1 factors

Date	Factor	B1	B2
2022-05-14	16201535337650459551722450080534790647	23400000	149887988250

History

Date	User	Type	Result
2022-07-17	Joss	NF-PM1	B1=3884411, B2=3891751500
2022-05-24	Joss	NF-PM1	B1=399500, B2=130364850
2022-05-14	Puang	CERT	PRP Certification Proof certified good
2022-05-14	aperson1	C-PRP	M3884411/16201535337650459551722450080534790647 : 6F568CE94F64CB7C PRP proof power = 7 PRP: Verified Proof certified good
2022-05-14	DRobinsonPE	F-PM1	Factor: 16201535337650459551722450080534790647 / (P-1, B1=23400000, B2=149887988250)
2021-02-21	axn	NF-PM1	B1=15000000, B2=750000000
2021-01-31	axn	NF	no factor from 2^70 to 2^71
2021-01-31	axn	NF	no factor from 2^69 to 2^70
2020-11-23	Carlos Pinho	NF-PM1	B1=171000, B2=4729000, E=6
2020-07-31	TJAOI	NF	no factor from 2^68 to 2^69
2019-01-18	Yxinity	NF	no factor from 2^67 to 2^68
2016-11-29	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
2016-02-18	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-03	Joss	NF-PM1	B1=239500, B2=2395000, E=6
2015-01-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-28	Joss	NF-PM1	B1=86523
2012-02-29	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-14	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1137500, E=6
2011-02-09	markr	NF	no factor from 2^61 to 2^62
2009-07-30	Carsten Kossendey	NF-PM1	B1=20000, B2=275000
2009-02-26	S485122	NF	no factor from 2^60 to 2^61

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