3 220 603 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
27565379526468140340686968486919020339927	41	134.3	2023-03-13 04:51:54

ECM

Digits	B1	Curves
25	50000	105 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Prather	13D572E518388DCB	0
Verified (Factored)	1998-08-24	Gerhard H Wrodnigg	13D572E518388DCB	0
Verified (Factored)	1999-06-26	Andrew China	13D572E518388DCB	2384727

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-03-15	Naegi Makoto	1980F2BDAAE993A6	1	2060909	5	3

P-1 factors

Date	Factor	B1	B2
2023-03-13	27565379526468140340686968486919020339927	8700000	22323365610

History

Date	User	Type	Result
2023-03-15	curtisc	CERT	PRP Certification Proof certified good
2023-03-15	Naegi Makoto	C-PRP	M3220603/27565379526468140340686968486919020339927 : 1980F2BDAAE993A6 PRP proof power = 7 PRP: Verified Proof certified good
2023-03-13	Sid & Andy	F-PM1	Factor: 27565379526468140340686968486919020339927 / (P-1, B1=8700000, B2=22323365610)
2022-05-25	TJAOI	NF	no factor from 2^69 to 2^70
2021-02-01	ViliamF	NF	no factor from 2^68 to 2^69
2020-03-06	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2018-12-24	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-19	Joss	NF-PM1	B1=435447, B2=12938233, E=6
2015-12-15	Squeeky_Squirrel	NF-PM1	B1=155000, B2=3952500, E=6
2015-06-24	Tha	NF	no factor from 2^65 to 2^66
2015-02-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-29	Joss	NF-PM1	B1=99858
2014-06-09	Joss	NF-PM1	B1=79929
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-09-19	markr	NF	no factor from 2^61 to 2^62
2011-09-04	USAFSS	NF-PM1	B1=60000, B2=1035000, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-05	S485122	NF	no factor from 2^60 to 2^61

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