3 981 847 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
8389020741600181287776473	25	82.8	2025-03-04 11:20:07

ECM

Digits	B1	Curves
25	50000	100 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Tom Carney	9BB871CBF6D88B62	0
Verified (Factored)	1999-09-14	Sven-Olaf Eschenfelder	9BB871CBF6D88B62	1674127

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2025-03-05	Adel El-Atawy	5CE0ABB7E5D641A6	1	1318439	5	3

History

Date	User	Type	Result
2025-03-05	Torchwood Institute	CERT	PRP Certification Proof certified good
2025-03-05	Adel El-Atawy	C-PRP	M3981847/8389020741600181287776473 : 5CE0ABB7E5D641A6 PRP proof power = 7 PRP: Verified Proof certified good
2025-03-04	Adel El-Atawy	F-ECM	Factor: 8389020741600181287776473 / (ECM curve 1, B1=97331, B2=147138915, Edwards Sigma=3753522644927838)
2025-02-12	Joss	NF-PM1	B1=10000000, B2=20173583430
2024-04-06	Joss	NF-PM1	B1=10000000, B2=10002782790
2022-09-29	Joss	NF-PM1	B1=1000000, B2=113097600
2022-04-29	Joss	NF-PM1	B1=500000, B2=113097600
2022-04-20	Joss	NF-PM1	B1=500000
2022-04-17	King	NF-PM1	B1=5000000, B2=2005315410
2021-11-21	Aaron Haviland	NF-PM1	B1=410000, B2=12300000, e=12
2021-06-03	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-05-15	axn	NF	no factor from 2^69 to 2^70
2020-06-12	TJAOI	NF	no factor from 2^68 to 2^69
2018-12-29	Yxinity	NF	no factor from 2^67 to 2^68
2016-12-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-10-17	Squeeky_Squirrel	NF-PM1	B1=245000, B2=6860000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-01-28	ramgeis	NF	no factor from 2^65 to 2^66
2015-09-17	Squeeky_Squirrel	NF-PM1	B1=190000, B2=4845000, E=6
2014-11-19	Joss	NF-PM1	B1=86119
2013-10-13	David Campeau	NF	no factor from 2^64 to 2^65
2013-07-07	Jayder	NF	no factor from 2^63 to 2^64
2012-02-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-09-16	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1190000, E=6
2011-03-27	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-27	Carsten Kossendey	NF-PM1	B1=20000, B2=290000

Username
Password