9 857 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^164 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	58000000000
B2 =	245990366716444350

ECM

Estimated T-Level: 51.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	275B	0
Verified		George Woltman	05646A61B1A6A75B	0
Verified		Brian J. Beesley	05646A61B1A6A75B	0
Verified	2015-04-11	MadPoo	05646A61B1A6A75B	7068

History

Date	User	Type	Result
2023-08-20	masser	NF-PP1	Start=6/5, B1=830000000, B2=148570000000
2023-07-09	masser	NF-PP1	Start=199/43, B1=830000000, B2=33200000000
2023-06-13	JacobZ	NF-PM1	B1=58000000000, B2=245990366716444350
2022-06-15	Anton Repko	NF	no factor from 2^64 to 2^66
2021-05-13	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2021-01-01	Ruslan Borisov	NF	no factor from 2^64 to 2^65
2018-02-06	snme2pm1	NF	no factor from 2^63 to 2^64
2017-01-04	mikr	NF-PM1	B1=60000000000, B2=4800000000000, E=12
2016-11-03	-Anonymous-	NF-PM1	B1=100000000000, B2=1000000000000, E=12
2016-10-30	-Anonymous-	NF-PM1	B1=40000000000, B2=400000000000, E=12
2016-10-30	-Anonymous-	NF-PM1	B1=20000000000, B2=200000000000, E=12
2016-05-18	-Anonymous-	NF-PM1	B1=10000000000, B2=100000000000, E=12
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-04-11	MadPoo	C-LL	05646A61B1A6A75B
2015-02-11	Jayder	NF-PM1	B1=1359491973, B2=80210026404, E=12
2015-01-20	LaurV	NF	no factor from 2^62 to 2^63
2015-01-05	LaurV	NF	no factor from 2^61 to 2^62
2012-11-08	bcp19	NF	no factor from 2^60 to 2^61
2010-07-20	George Woltman	NF	no factor from 2^59 to 2^60
2010-07-20	George Woltman	NF	no factor from 2^58 to 2^59

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