2 078 371 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

2078371

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁹

TF target 2⁶²

TF below 2^82 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	14300000
B2 =	48385326990

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	169 / 640

Estimated T-Level: 26.3 ⓘ

Status	Date	User	Residue	Shift
Verified		David Linton	BC2B040F84C5DA21	0
Verified	1999-01-29	Christopher Springer	BC2B040F84C5DA21	301028
Verified	2017-06-06	kkmrkkblmbrbk	BC2B040F84C5DA21	1942225

History

Date	User	Type	Result
2023-08-18	Sid & Andy	NF-PM1	B1=14300000, B2=48385326990
2023-07-07	Joss	NF-PM1	B1=2256559, B2=4725400680
2023-03-17	Joss	NF-PM1	B1=2256559, B2=2049127080
2023-01-24	Joss	NF-PM1	B1=2256559, B2=710990280
2021-07-19	TJAOI	NF	no factor from 2^68 to 2^69
2019-09-17	mikr	NF-PM1	B1=4000000, B2=200000000, E=12
2019-03-29	chuenkit	NF	no factor from 2^67 to 2^68
2018-02-25	Joss	NF-PM1	B1=2256559, B2=8986236, E=12
2017-06-06	kkmrkkblmbrbk	C-LL	BC2B040F84C5DA21
2016-09-25	Joss	NF-PM1	B1=2246559, B2=8986236, E=6
2016-09-11	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-06	Joss	NF-PM1	B1=2246559, B2=4493118, E=6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-07	Joss	NF-PM1	B1=2246559
2015-06-25	Joss	NF-PM1	B1=2042327
2015-06-08	Joss	NF-PM1	B1=1856661
2015-05-26	Joss	NF-PM1	B1=1687874
2015-05-22	Joss	NF-PM1	B1=1534431
2015-05-07	Joss	NF-PM1	B1=1394938
2015-05-01	Joss	NF-PM1	B1=1268126
2015-04-08	Joss	NF-PM1	B1=1048039
2015-03-28	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-28	VictordeHollander	NF	no factor from 2^63 to 2^64
2015-03-15	Joss	NF-PM1	B1=866149
2015-03-12	Joss	NF-PM1	B1=787409
2015-03-03	Joss	NF-PM1	B1=715827
2015-02-25	Joss	NF-PM1	B1=650752
2015-02-16	Joss	NF-PM1	B1=591593
2015-02-14	Joss	NF-PM1	B1=537812
2015-02-12	Joss	NF-PM1	B1=444473
2015-02-02	Joss	NF-PM1	B1=275984
2015-02-01	Joss	NF-PM1	B1=250895
2015-01-30	Joss	NF-PM1	B1=228087
2015-01-29	Joss	NF-PM1	B1=207352
2014-11-12	Joss	NF-PM1	B1=165882
2013-09-02	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-17	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-21	James Heinrich	NF-PM1	B1=135000, B2=3105000, E=6
2011-01-07	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2009-07-25	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61

Username
Password