6 581 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^184 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	37000000000
B2 =	148599418701633900

ECM

Estimated T-Level: 57.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	7888	0
Verified		George Woltman	08166D871677F888	0
Verified		Brian J. Beesley	08166D871677F888	0
Verified	2015-04-11	MadPoo	08166D871677F888	4479

History

Date	User	Type	Result
2023-08-17	masser	NF-PP1	Start=6/5, B1=1310000000, B2=234490000000
2023-08-10	-Anonymous-	NF-PM1	B1=37000000000, B2=148599418701633900
2023-07-15	masser	NF-PM1	B1=72000000000, B2=62268256221110940
2023-07-10	masser	NF-PP1	Start=89/41, B1=1310000000, B2=52400000000
2022-03-28	Anton Repko	NF	no factor from 2^64 to 2^66
2021-05-12	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2021-01-30	Ruslan Borisov	NF	no factor from 2^64 to 2^65
2017-09-26	snme2pm1	NF	no factor from 2^63 to 2^64
2016-10-28	snme2pm1	NF	no factor from 2^62 to 2^63
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-07-14	Sid & Andy	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	08166D871677F888
2013-05-22	SRJ2877	NF-PM1	B1=1500000000000
2012-12-09	SRJ2877	NF-PM1	B1=125000000000
2012-11-23	SRJ2877	NF-PM1	B1=12500000000, B2=60000000000, E=12
2012-11-23	SRJ2877	NF-PM1	B1=11000000000, B2=35000000000, E=12
2012-11-23	SRJ2877	NF-PM1	B1=10000000000
2012-10-11	bcp19	NF	no factor from 2^60 to 2^61
2010-12-22	monst	NF	no factor from 2^59 to 2^60
2010-11-28	monst	NF	no factor from 2^58 to 2^59

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