3 185 887 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
307903406083945294238642513	27	88.0	2019-10-06 01:44:07

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Prather	807E6F87EEB7D1D6	0
Verified (Factored)	1999-06-15	Jeff Rennert	807E6F87EEB7D1D6	1524398

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-06	mnd9	C5B0ED1AF33FA9C5	1	690932	5	3
Verified	2019-10-09	GAN	C5B0ED1AF33FA9C5	1	2048995	5	3

P-1 factors

Date	Factor	B1	B2
2019-10-06	307903406083945294238642513	4000000	150000000

History

Date	User	Type	Result
2021-12-22	Joss	NF-PM1	B1=3185887, B2=637437570
2021-12-19	Joss	NF-PM1	B1=3185887, B2=108997350
2021-11-20	Joss	NF-PM1	B1=3185887
2021-02-18	Joss	NF	no factor from 2^66 to 2^67
2021-01-03	Joss	NF	no factor from 2^65 to 2^66
2019-10-09	GAN	C-PRP	M3185887/307903406083945294238642513 : C5B0ED1AF33FA9C5 PRP: Verified PRP without proof (not generated)
2019-10-06	mnd9	C-PRP	M3185887/307903406083945294238642513 : C5B0ED1AF33FA9C5 PRP: Verified PRP without proof (not generated)
2019-10-06	mikr	F-PM1	Factor: 307903406083945294238642513 / (P-1, B1=4000000, B2=150000000, E=12)
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-30	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-15	Joss	NF-PM1	B1=651711, B2=11730798, E=6
2015-12-02	Joss	NF-PM1	B1=543093
2015-11-30	Joss	NF-PM1	B1=493721
2015-11-28	Joss	NF-PM1	B1=448838
2015-06-21	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=100292
2014-06-01	Joss	NF-PM1	B1=80146
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-13	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-09-13	Squeeky_Squirrel	NF-PM1	B1=60000, B2=975000, 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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