Someone here can tell me.....
...how long it might take to factorise the product of two 300 long decimal prime numbers?
I mention this here, because it takes my pathetic laptop about two minutes to find a couple of these decimals, and a fraction of a second to multiply them together. So, just leave said pathetic laptop doing some cataloguing overnight, and I have a LARGE body of LARGE randomly chosen prime numbers, and an even larger body of composite numbers to choose from.
If the answer to my question turns out to be "A long time", then maybe I don't need to mess about with silkworms.
If the answer to my question turns out to be "A few minutes"......then I need to start on 600 long primes, and do cataloging for a bit longer!