GIMPSers, after reading a few of the replies on the list and privately mailed to me, I must comment to clear up a misconception. ***DO NOT quit your day jobs*** if you are joining GIMPS to try for the 100K EFF prize. I mentioned the prize to a certain extent as a joke, for one's individual chances of getting it are small indeed, as I commented before: 1. Currently GIMPS is systematically searching numbers of a couple million digits, so these are not even eligible for the EFF prize, which is for a 10 million digit prime. The GIMPS wolfpack will not be at the 10 million digit mark for about another 4 to 5 years, assuming it does not dissolve in chaos, as lone wolves defect hunting for the big game. The EFF prize may actually *contribute* to the breakdown of the previously stable systematic search for Mersenne primes. 2. Current common desktop computers (400-500 Mhz P2s and P3s) take about two *years* to analyse a *single* candidate, and that candidate has about 1 in 300,000 probability of being a winner. So, the mathematical expectation (prize value times the probability of winning) is only about 30 cents, for 2 years of computer time. Consequently, I do not recommend joining this project for the money. I *do* recommend joining it for developing parallel distributed computing, however. The GIMPS software is open source C code, and can be modified, so that you can use the background computing infrastructure and I/O, then modify the math to do whatever you want. This also provides an interesting study case for Greg Stock's E4 talk. I suspect many of the current participants in GIMPS have not calculated their person probability of winning the cash prize. Many of us however, were in it for other reasons before the prize was announced. Stop CPU waste. A busy computer is a happy computer. Let us create a womb for the singularity, then hope to hell a monster is not born therefrom. {8-] spike