9 551 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 =	60000000000
B2 =	248360216122568550

ECM

Estimated T-Level: 51.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	36BC	0
Verified		George Woltman	4801D9020C0B36BC	0
Verified		Brian J. Beesley	4801D9020C0B36BC	0
Verified	2015-04-11	MadPoo	4801D9020C0B36BC	116

History

Date	User	Type	Result
2023-08-19	masser	NF-PP1	Start=6/5, B1=860000000, B2=153940000000
2023-07-09	masser	NF-PP1	Start=185/53, B1=860000000, B2=34400000000
2023-06-26	JacobZ	NF-PM1	B1=60000000000, B2=248360216122568550
2022-05-25	Anton Repko	NF	no factor from 2^64 to 2^66
2021-05-12	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2021-01-04	Ruslan Borisov	NF	no factor from 2^64 to 2^65
2018-10-04	snme2pm1	NF	no factor from 2^63 to 2^64
2017-01-20	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
2016-10-13	snme2pm1	NF	no factor from 2^62 to 2^63
2016-05-17	-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	4801D9020C0B36BC
2015-03-26	snme2pm1	NF	no factor from 2^61 to 2^62
2015-02-07	Jayder	NF-PM1	B1=1308096280, B2=81101969375, E=12
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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