3 371 063 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
1251353794491218684685275513	28	90.0	2025-03-03 15:19:22

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	64 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Barton Meeks	1B181850E5B14281	0
Verified (Factored)		Michael Weingran	1B181850E5B14281	0
Verified (Factored)	2015-11-14	MadPoo	1B181850E5B14281	946084

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2025-03-03	mewturn	490387D6795AA14D	1	545643	5	3

History

Date	User	Type	Result
2025-03-03	ANONYMOUS	CERT	PRP Certification Proof certified good
2025-03-03	mewturn	C-PRP	M3371063/1251353794491218684685275513 : 490387D6795AA14D PRP proof power = 7 PRP: Verified Proof certified good
2025-03-03	mewturn	F-ECM	Factor: 1251353794491218684685275513 / (ECM curve 36, B1=126861, B2=240229275, Edwards Sigma=920164077576157)
2023-05-01	Sid & Andy	NF-PM1	B1=6200000, B2=22240428210
2021-08-21	MadPoo	NF	no factor from 2^69 to 2^70
2021-08-01	Joss	NF	no factor from 2^68 to 2^69
2021-02-05	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2018-11-05	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-12	Joss	NF-PM1	B1=330000, B2=3300000, E=6
2017-03-07	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
2015-11-14	MadPoo	C-LL	1B181850E5B14281
2015-07-27	Squeeky_Squirrel	NF-PM1	B1=165000, B2=4331250, E=6
2015-03-30	Gordon Spence	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
2014-10-12	Joss	NF-PM1	B1=98080
2014-06-24	Joss	NF-PM1	B1=79040
2012-11-15	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-17	USAFSS	NF-PM1	B1=60000, B2=930000, E=6
2011-08-20	markr	NF	no factor from 2^61 to 2^62
2009-07-09	Carsten Kossendey	NF-PM1	B1=15000, B2=206250
2009-03-27	S485122	NF	no factor from 2^60 to 2^61

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