Fourteen or Bust, or ECM attack on C300+ - Page 3

swellman · 2016-11-08, 13:53

Ryan is running ECM on C301_143_129, with some 10k curves @B1=76e8 completed so far. He is planning on running another 16k curves soon, at which point it may be safe to declare victory and flee the field.

XYYXF · 2016-11-08, 15:14

BTW, 142¹³⁹+139¹⁴² is the only number without known factors :)

swellman · 2016-11-19, 19:14

Quote:

Originally Posted by XYYXF

BTW, 142¹³⁹+139¹⁴² is the only number without known factors :)

Ryan is running ECM @B1=76e8 on this number, as well as C301_143_129. 16k curves at a time (alternating between the two composites). No luck so far.

Not sure how many curves are required at this level before declaring both numbers "NFS ready", but I'm thinking we are rapidly approaching that point.

swellman · 2016-11-29, 22:54

Quote:

Originally Posted by XYYXF

BTW, 142¹³⁹+139¹⁴² is the only number without known factors :)

Ryan has started sieving this number.

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2016-11-08, 13:53	#23
swellman Jun 2012 3068₁₀ Posts	Ryan is running ECM on C301_143_129, with some 10k curves @B1=76e8 completed so far. He is planning on running another 16k curves soon, at which point it may be safe to declare victory and flee the field.

2016-11-08, 15:14	#24
XYYXF Jan 2005 Minsk, Belarus 2⁴·5² Posts	BTW, 142¹³⁹+139¹⁴² is the only number without known factors :)