3 218 041 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
520327928420654567471647	24	78.8	2021-01-24 22:25:57

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)		Camy Ruggiero	A756190DCF48887D	0
Verified (Factored)	1999-08-07	david triggerson	A756190DCF48887D	2513612

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-01-24	ViliamF	0BB7373799376259	1	778164	5	3

History

Date	User	Type	Result
2022-09-11	Joss	NF-PM1	B1=1000000, B2=241175550
2022-03-11	Joss	NF-PM1	B1=1000000, B2=134343300
2021-01-28	ViliamF	NF	no factor from 2^68 to 2^69
2021-01-25	curtisc	CERT	PRP Certification Proof certified good
2021-01-24	ViliamF	C-PRP	M3218041/520327928420654567471647 : 0BB7373799376259 PRP proof power = 7 PRP: Verified Proof certified good
2021-01-24	Zenzoma	F-ECM	Factor: 520327928420654567471647 / (ECM curve 5, B1=50000, B2=5000000, Sigma=4850496455517931)
2020-01-13	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-05-12	Joss	NF-PM1	B1=351434, B2=6325812, E=6
2015-12-13	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=99890
2014-06-03	Joss	NF-PM1	B1=79945
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-20	markr	NF	no factor to 2^62
2011-09-24	USAFSS	NF-PM1	B1=60000, B2=1035000, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-07	S485122	NF	no factor from 2^60 to 2^61

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