Team drive #13: k=400-600 n=1M-2M

[Mini-Geek]

Originally Posted by gd_barnes

I seem to be searching all the primeless ranges on this drive so that everyone else can find the primes. There's been one prime in the last n=23K range; by far the worst range since the drive started. I wonder if all of my machines have gone bad at once.

Must be because I started crunching there on 2 cores...my luck's been pretty poor on this server, with 15704 tests (approx 1.5-2 primes expected; most of those tests were long ago when the numbers were smaller) and 0 primes.

Originally Posted by MyDogBuster

Probably setting up for a nice run shortly.

I'd like to think so, but that's a good example of gambler's fallacy. Crunching primes in NPLB, CRUS, etc. has taught me a great deal about probability and randomness: expect the unexpected. But don't be surprised when it plays out as the most likely scenario, either. And if you ever think you know what's going to happen based on past random events, you're (probably) wrong.

[Mini-Geek]

I have confirmed that 405*2^1508592-1 is prime. I tried to submit it to the Top 5k before I realized it was already known.