As perhaps Daniel is away on vacation, I thought that his pending Apples (exponent 98304, small limbs), would be a great test of the latest combined ...
In order to make sure you have the best quality candidates, and to ensure that I have the best quality code, I've been pushing DaPhiSiv beyond where it was...
Hi, like I said, bad news... Phi(49152,134217728) res=(-1+-0w) at bit 221171. maxerr=0.000000. Time=332.690 => is 2-SPRP. ./overseis.092.g5 -t 49152 134217728 ...
... Unfortunately, yes. This is a honest-to-goodness pseudoprime. "base 134217728 has 1 factors." is the clue. It's in fact 2^27. These bases which are powers...
The sieve drama has a tist to it - there was no problem with my erat, despite working with only the bottom 32 bits of 64 bit numbers! I don't know how or why,...
... good. ... Excellent. These guys are a lot tougher to find, but well worth it. That entered the top-5000 in the top-500. Congratulatios. In order to...
Brought on-list. ... I used a very simple GP/Pari script. Bang up the precision to 20 digits. They're just sines and cosines of muliplies of 2Pi/#limbs. Note,...
... Excellent. It seems everyone's finding large ones but me presently, but I won't complain. (I still have a couple of machines finishing off LG 100000-digit...
... [SNIP - panic] I've updated and uploaded "libs" to remove a cut-corner in the Cantor-Zassehaus modular square root which was causing root-finding to fail...
... If I have interpreted the mean correctly, 50% of the time, we'd expect a ratio <1.476, and 50% of the time we'd expect a ratio >1.476. So the 44 Mersennes ...
... In a sense it is, but clusters are expected in a Poisson distribution and the Mersennes have been slightly more evenly spread that one might expect. But...
Two primes found in this range. 49152_k2_120-150_1of2.abc (5668/5667 100%) No process running 49152_k2_120-150_1of2.abc has been completed. Please move to...
... Nice. Expectation just over 1.5. I'm glad to see you grabbing a nice high range - they're better VFM, and there are plenty of them. I'm trying to keep the...
I have finally finished 49152_k2 from 800000-850000. I found 6 primes in that range, all just under 200000 digits in size and all found on a PowerPC G5. Now...
... Congratulations - that's an unexpectedly high yield. I've found 0 in a range of about 30000 so far, so I'm a bit jealous! Phil () ASCII ribbon campaign...
This was found using the client/server setup using MaximEis, but I decided to verify it using OversEis: $ ./overseis.093.athlon -t -q 98304 1833726 OversEis...
... Thanks Jeff. The work factor ratio of ~9 between the ranges is a bit of a bummer, but these things come in bands so there's nothing you can do. (Apart from...
Phi(49152,1029757567704) b=(3*2)*414278^2 LimbEq=1604492 Risk=145.22 (653811bits) res=(-1+0w) at bit 17. maxerr=0.218750. Time=1619.470 => is 2-SPRP. ...
... Excellent! My G5 has found a few recently too, and our ~200000 digit tally is beginning to look quite healthy. We have 50 primes between #300 and #400, and...
... Woo woo! Excellent! That's a nice low maxerr - I reckon that there will be plenty of room for primes in the range 205k-210k digits (although perhaps not ...
... If you can get it cheaper - buy a crate or eight! ... You can terminate those low ranges early. I recommend you do. I'll need to diddle the database...
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