2 900 857 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
327014270192082722911	21	68.1	2019-07-04 02:25:10

ECM

Digits	B1	Curves
25	50000	16 / 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
Bad	1998-03-23	Michael Trainor	C58B6265CAED71E6	0
Verified (Factored)	1999-08-16	Vic Larson	7D1FA3C3A86A2561	344152
Verified (Factored)	2000-05-05	Rick Adams	7D1FA3C3A86A2561	2771002
Verified (Factored)	2018-09-30	kkmrkkblmbrbk	7D1FA3C3A86A2561	2557533

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-07-09	roemer2201	11A822BA68CBD7DC	1	2797528	5	3
Verified	2019-07-10	marssystems	11A822BA68CBD7DC	1	1657228	5	3

History

Date	User	Type	Result
2023-04-18	Kevin_9611	NF-PM1	B1=3490000, B2=4782984570
2019-07-10	marssystems	C-PRP	M2900857/327014270192082722911 : 11A822BA68CBD7DC PRP: Verified PRP without proof (not generated)
2019-07-09	roemer2201	C-PRP	M2900857/327014270192082722911 : 11A822BA68CBD7DC PRP: Verified PRP without proof (not generated)
2019-07-04	Corey	F-ECM	Factor: 327014270192082722911 / (ECM curve 1, B1=50000, B2=5000000)
2018-12-17	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-30	kkmrkkblmbrbk	C-LL	7D1FA3C3A86A2561
2018-02-18	Joss	NF-PM1	B1=2900857, B2=5801714, E=6
2018-02-17	Joss	NF-PM1	B1=2900857
2018-02-12	Joss	NF-PM1	B1=2488320
2018-02-11	Joss	NF-PM1	B1=2073600
2018-02-07	Joss	NF-PM1	B1=1728000
2018-02-05	Joss	NF-PM1	B1=1440000
2017-11-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-02-20	Yxinity	NF	no factor from 2^65 to 2^66
2015-04-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2011-12-07	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-03-30	Rob_Dee	NF-PM1	B1=1000000, B2=1100000
2010-03-29	Rob_Dee	NF-PM1	B1=900000, B2=1000000
2010-03-28	Rob_Dee	NF-PM1	B1=800000, B2=900000
2010-03-27	Rob_Dee	NF-PM1	B1=700000, B2=800000
2010-03-26	Rob_Dee	NF-PM1	B1=600000, B2=700000
2010-03-25	Rob_Dee	NF-PM1	B1=500000, B2=600000
2010-03-24	Rob_Dee	NF-PM1	B1=400000, B2=500000
2010-03-23	Rob_Dee	NF-PM1	B1=300000, B2=400000
2010-03-22	Rob_Dee	NF-PM1	B1=200000, B2=300000
2010-03-21	Rob_Dee	NF-PM1	B1=100000, B2=200000
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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