17 761 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^165 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	100000000000
B2 =	80107051974399450

ECM

Estimated T-Level: 51.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	39E2	0
Verified		George Woltman	C20DF650F99339E2	0
Verified		Brian J. Beesley	C20DF650F99339E2	0
Verified	2015-04-11	MadPoo	C20DF650F99339E2	11110

History

Date	User	Type	Result
2023-08-28	masser	NF-PP1	Start=6/5, B1=430000000, B2=76970000000
2023-07-08	masser	NF-PP1	Start=156/11, B1=430000000, B2=17200000000
2022-04-29	-Anonymous-	NF-PM1	B1=100000000000, B2=80107051974399450
2022-02-23	Ruslan Borisov	NF	no factor from 2^65 to 2^66
2021-05-12	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2021-02-13	Ruslan Borisov	NF	no factor from 2^64 to 2^65
2019-05-20	alex	NF-PM1	B1=10000000000, B2=500000000000, E=12
2018-07-27	snme2pm1	NF	no factor from 2^63 to 2^64
2016-12-23	James Hintz	NF-PM1	B1=1873485798, B2=116156119476, E=12
2016-05-08	Sid & Andy	NF	no factor from 2^62 to 2^63
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-05-11	snme2pm1	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	C20DF650F99339E2
2015-02-13	Jayder	NF-PM1	B1=1172220000, B2=35360118869, E=12
2013-11-16	David Campeau	NF-PM1	B1=1172220000
2013-11-11	David Campeau	NF-PM1	B1=937775000
2013-10-29	David Campeau	NF-PM1	B1=703330000
2012-12-25	bcp19	NF	no factor from 2^60 to 2^61
2012-12-12	SRJ2877	NF-PM1	B1=500000000
2010-06-22	anonymous	NF	no factor from 2^59 to 2^60
2010-06-22	anonymous	NF	no factor from 2^58 to 2^59

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