20200415, 10:48  #1 
(loop (#_fork))
Feb 2006
Cambridge, England
2·5^{2}·127 Posts 
Yields with 16e
This is a 16e factorisation of a GNFS200.0 number (and about a third complete)
I am a little surprised that, with alim=rlim=400M, I'm seeing the yield increasing monotonically as Q goes down all the way from 300M to 200M ... I've generally expected the peak yield to be roughly at Q=lim Maybe I should start this kind of large job by sieving 1M slots at 20M intervals then filling in the gaps. Much narrower sieve regions will just pick up Poisson noise rather than a 10% yield difference. Actually the noise is much worse than Poisson, because there's a roughly Poisson process at each prime ideal plus nonuniform distributions of the prime ideals; if I fit a linear trend to the yield and look at then the median is about seven. Last fiddled with by fivemack on 20200415 at 10:49 
20200419, 13:45  #2  
(loop (#_fork))
Feb 2006
Cambridge, England
2×5^{2}×127 Posts 
Quote:
Last fiddled with by fivemack on 20200419 at 14:08 

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