1 157 591 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁹

TF target 2⁶⁰

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

P-1

B1 =	15000000
B2 =	52081146810

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	4C2	0
Verified		David Willmore	C1DED3D83303A4C2	0
Verified		David Tegerdine	C1DED3D83303A4C2	0
Verified	2015-11-11	MadPoo	C1DED3D83303A4C2	633690

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-11-05	Ethan O'Connor	F8B0DFC68904F879	981692	1	3

History

Date	User	Type	Result
2023-12-10	mikr	NF-PM1	B1=15000000, B2=52081146810
2023-06-26	Joss	NF-PM1	B1=2929412, B2=26982315360
2023-02-15	Joss	NF-PM1	B1=2929412, B2=5835634350
2023-01-17	Joss	NF-PM1	B1=2929412, B2=2099541990
2021-09-21	MadPoo	NF	no factor from 2^68 to 2^69
2020-11-05	Simon Josefsson	CERT	PRP Certification CERT proof power = 6 Proof certified good
2020-11-05	Ethan O'Connor	C-PRP	F8B0DFC68904F879 PRP proof power = 6 PRP: Verified Proof certified good
2020-02-29	Gordon Spence	NF	no factor from 2^67 to 2^68
2018-08-15	Yxinity	NF	no factor from 2^66 to 2^67
2017-10-23	mikr	NF-PM1	B1=15000000, B2=500000000, E=12
2016-02-28	Joss	NF-PM1	B1=2909412, B2=52369416, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-11	MadPoo	C-LL	C1DED3D83303A4C2
2015-08-28	omylist	NF	no factor from 2^65 to 2^66
2014-12-30	lycorn	NF	no factor from 2^64 to 2^65
2014-12-28	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2012-10-11	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-04	markr	NF-PM1	B1=500000, B2=10000000, E=12
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-02-15	Sturle Sunde	NF	no factor from 2^60 to 2^61

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