3 742 369 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷¹

TF target 2⁶⁴

TF below 2^106 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	14458844400

ECM

Estimated T-Level: 33.5 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-07-05	Rob Ebbers	E943B7A88D9882BE	0
Verified	1999-09-14	Kevin Chiu	E943B7A88D9882BE	1506648

History

Date	User	Type	Result
2024-11-05	Joss	NF-PM1	B1=10000000, B2=14458844400
2022-10-12	Joss	NF-PM1	B1=1000000, B2=1033646250
2022-10-11	Joss	NF-PM1	B1=1000000, B2=234765300
2022-09-30	Joss	NF-PM1	B1=1000000, B2=130364850
2016-01-10	ramgeis	NF	no factor from 2^70 to 2^71
2014-04-04	ramgeis	NF	no factor from 2^69 to 2^70
2014-04-04	ramgeis	NF	no factor from 2^68 to 2^69
2014-04-04	ramgeis	NF	no factor from 2^67 to 2^68
2012-11-02	BigBrother	NF-PM1	B1=50000000, B2=5000000000, E=12
2012-05-04	Richard B. Woods	NF	no factor from 2^66 to 2^67
2012-04-29	Richard B. Woods	NF	no factor from 2^65 to 2^66
2012-04-27	Richard B. Woods	NF	no factor from 2^64 to 2^65
2011-09-10	BigBrother	NF-PM1	B1=20000000, B2=2000000000, E=12
2010-05-12	Richard B. Woods	NF	no factor from 2^63 to 2^64
2010-05-12	Richard B. Woods	NF	no factor from 2^62 to 2^63
2010-04-08	Richard B. Woods	NF	no factor from 2^61 to 2^62
2009-08-15	BigBrother	NF-PM1	B1=2000000, B2=40000000, E=12
2009-07-26	BigBrother	NF-PM1	B1=1000000, B2=20000000, E=12
2009-07-18	BigBrother	NF-PM1	B1=500000, B2=10000000, E=6
2009-07-07	Carsten Kossendey	NF-PM1	B1=20000, B2=265000
2009-03-05	S485122	NF	no factor from 2^60 to 2^61

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