33 629 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^142 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	8000000000
B2 =	1871010236495400

ECM

Estimated T-Level: 44.2 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	3AAC	0
Verified		George Woltman	2D25022580C83AAC	0
Verified		Brian J. Beesley	2D25022580C83AAC	0
Verified	2015-04-11	MadPoo	2D25022580C83AAC	25655

History

Date	User	Type	Result
2023-08-25	masser	NF-PP1	Start=6/5, B1=210000000, B2=37590000000
2023-07-30	masser	NF-PM1	B1=8000000000, B2=1871010236495400
2023-07-06	masser	NF-PP1	Start=143/67, B1=210000000, B2=8400000000
2021-05-06	ATH	NF-PP1	Start=2/7, B1=500000000, B2=101500000000
2021-02-13	Yxinity	NF	no factor from 2^65 to 2^66
2019-11-20	Yxinity	NF	no factor from 2^64 to 2^65
2019-11-19	Yxinity	NF	no factor from 2^64 to 2^65
2018-06-15	Yxinity	NF	no factor from 2^63 to 2^64
2018-06-14	Yxinity	NF	no factor from 2^63 to 2^64
2017-07-10	mikr	NF-PM1	B1=12000000000, B2=960000000000, E=12
2016-12-02	Sid & Andy	NF	no factor from 2^62 to 2^63
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-04-11	MadPoo	C-LL	2D25022580C83AAC
2014-01-24	mikr	NF-PM1	B1=245000000, B2=9400000000, E=12
2012-08-25	bcp19	NF	no factor from 2^61 to 2^62
2012-07-01	LaurV	NF-PM1	B1=100000000, B2=2000000000, E=12
2012-05-29	Joss	NF-PM1	B1=81061369
2012-02-14	Richard B. Woods	NF	no factor from 2^60 to 2^61
2011-09-24	Joss	NF-PM1	B1=54040913
2009-02-08	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-13	Sturle Sunde	NF	no factor from 2^58 to 2^59

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