2 152 321 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
480153070329265881720222257	27	88.6	2020-07-08 23:07:51

ECM

Digits	B1	Curves
25	50000	95 / 280

Estimated T-Level: 21.7 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		James Gant	ECB6B81F4D0C22C6	0
Verified (Factored)	1999-03-01	Florian Leeber	ECB6B81F4D0C22C6	512743
Verified (Factored)	2018-04-09	kkmrkkblmbrbk	ECB6B81F4D0C22C6	1249778

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-09	M Miller	C31D71792A9D6DD8	1	2061348	5	3
Verified	2020-07-09	marssystems	C31D71792A9D6DD8	1	614557	5	3

History

Date	User	Type	Result
2020-07-09	marssystems	C-PRP	M2152321/480153070329265881720222257 : C31D71792A9D6DD8 PRP: Verified PRP without proof (not generated)
2020-07-09	M Miller	C-PRP	M2152321/480153070329265881720222257 : C31D71792A9D6DD8 PRP: Verified PRP without proof (not generated)
2020-07-08	GAN	F-ECM	Factor: 480153070329265881720222257 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2071096844826811)
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-09	kkmrkkblmbrbk	C-LL	ECB6B81F4D0C22C6
2017-12-12	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2016-11-03	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-07	Joss	NF-PM1	B1=360000, B2=6480000, E=12
2016-03-20	Joss	NF-PM1	B1=269677
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-07	Joss	NF-PM1	B1=149821
2013-09-08	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-25	markr	NF-PM1	B1=120000, B2=2340000, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2010-11-03	Joss	NF-PM1	B1=20000
2009-01-06	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61

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