1 384 387 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁸

TF target 2⁶⁰

TF below 2^81 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	22700000
B2 =	116603353020

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Matan Ziv-Av	BCBBC117507B25D4	0
Verified		Cornelius Caesar	BCBBC117507B25D4	0
Verified	2008-06-03	Brian J. Beesley	BCBBC117507B25D4	927239
Verified	2016-06-02	MadPoo	BCBBC117507B25D4	549267

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-11-06	Ethan O'Connor	68CB4C00710D69FD	610014	1	3

History

Date	User	Type	Result
2023-09-29	Sid & Andy	NF-PM1	B1=22700000, B2=116603353020
2023-06-30	Joss	NF-PM1	B1=1384387, B2=11026628340
2023-03-03	Joss	NF-PM1	B1=1384387, B2=4740399300
2022-11-16	Joss	NF-PM1	B1=1384387, B2=1597288770
2020-11-08	curtisc	CERT	PRP Certification CERT proof power = 6 Proof certified good
2020-11-06	Ethan O'Connor	C-PRP	68CB4C00710D69FD PRP proof power = 6 PRP: Verified Proof certified good
2020-02-27	Gordon Spence	NF	no factor from 2^67 to 2^68
2018-10-14	Joss	NF-PM1	B1=1384387, B2=152282570, E=12
2018-10-05	Joss	NF-PM1	B1=1384387, B2=13843870, E=12
2018-04-16	TJAOI	NF	no factor from 2^66 to 2^67
2016-06-02	MadPoo	C-LL	BCBBC117507B25D4
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-10-12	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-19	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-19	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-22	mikr	NF-PM1	B1=3106900, B2=111849000, E=12
2014-04-22	Joss	NF-PM1	B1=200000
2014-04-15	-Anonymous-	NF-PM1	B1=110000
2013-01-27	dbaugh	NF	no factor from 2^62 to 2^63
2012-07-19	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61

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