3 897 389 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
29328238810511654808943052108623	32	104.5	2021-03-11 12:06:29
1540545753966357318407650279153419100591841	43	140.1	2021-03-11 12:06:29

ECM

Digits	B1	Curves
25	50000	12 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-06-28	The Feenster	CA0DD16086A97513	0
Verified (Factored)	1999-12-01	Thiago Augusto Suzin	CA0DD16086A97513	3392267

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-11	mrh	E612C5963D80BE09	2	2815189	5	3

P-1 factors

Date	Factor	B1	B2
2021-03-11	29328238810511654808943052108623	15000000	750000000
2021-03-11	1540545753966357318407650279153419100591841	15000000	750000000

History

Date	User	Type	Result
2022-07-17	Joss	NF-PM1	B1=3897389, B2=3933588750
2022-02-15	Joss	NF-PM1	B1=1000000, B2=134904000
2021-03-11	Ben Delo	CERT	PRP Certification Proof certified good
2021-03-11	mrh	C-PRP	M3897389/29328238810511654808943052108623/1540545753966357318407650279153419100591841 : E612C5963D80BE09 PRP proof power = 7 PRP: Verified Proof certified good
2021-03-11	axn	F-PM1	Factor: 45181493770845059783464463031892083814410916646456447555354707802319544943 / (P-1, B1=15000000, B2=750000000)
2021-02-17	axn	NF	no factor from 2^70 to 2^71
2021-02-17	axn	NF	no factor from 2^69 to 2^70
2020-07-31	TJAOI	NF	no factor from 2^68 to 2^69
2018-07-23	TJAOI	NF	no factor from 2^67 to 2^68
2016-11-30	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-03	Joss	NF-PM1	B1=250905, B2=4516290, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-19	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-20	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-20	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-01	Joss	NF-PM1	B1=86468
2012-04-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-10	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1172500, E=6
2011-02-05	markr	NF	no factor from 2^61 to 2^62
2009-08-01	Carsten Kossendey	NF-PM1	B1=20000, B2=275000
2009-02-25	S485122	NF	no factor from 2^60 to 2^61

Username
Password