2 175 769 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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 =	15800000
B2 =	41225419950

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	165 / 640

Estimated T-Level: 26.3 ⓘ

Status	Date	User	Residue	Shift
Verified		Jeff Woods	BB251EB0DA701F8C	0
Verified	1999-02-21	Aaron B	BB251EB0DA701F8C	1418656
Verified	2018-04-12	kkmrkkblmbrbk	BB251EB0DA701F8C	745203

History

Date	User	Type	Result
2023-10-09	Sid & Andy	NF-PM1	B1=15800000, B2=41225419950
2023-09-29	Joss	NF-PM1	B1=1000000, B2=10499190240
2023-06-04	Joss	NF-PM1	B1=1000000, B2=5031549600
2023-01-31	Joss	NF-PM1	B1=1000000, B2=930848100
2021-07-15	TJAOI	NF	no factor from 2^68 to 2^69
2019-11-19	mikr	NF-PM1	B1=5000000, B2=200000000, E=12
2019-04-29	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-12	kkmrkkblmbrbk	C-LL	BB251EB0DA701F8C
2016-11-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-01-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-12-22	HBendtz	NF-PM1	B1=700000, B2=21000000, e=12
2015-03-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-05	Joss	NF-PM1	B1=149000
2014-06-13	Joss	NF-PM1	B1=119500
2013-09-09	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-15	markr	NF-PM1	B1=90000, B2=1620000, E=6
2010-11-07	Joss	NF-PM1	B1=30000
2010-11-05	Joss	NF-PM1	B1=15000
2009-01-07	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

Username
Password