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At Extro4 at Berkeley in 1999, Gregory Stock did a pitch on

the effect of cash prizes on technology. I mentioned the Electronic

Frontier Foundation prize of 100Kbucks for the first prime

number over 10 million digits. (The 50k$ prize has since been

claimed for the first prime over 1 million digits.)

I just did a calculation that shows that using a state of the art

P4-2GHz, doing Lucas-Lehmer tests, each exponent would

take about 6.5 days and is worth about 37 cents, assuming you

take the (probability of prime) * (100K$). The power cost

at 11 cents a kWh would run you about 2 bucks to check

that exponent. So we still aren't at breakeven for chasing

the EFF prize. But we are getting close. So in another 3 to 5

years, computers will be able to run 24/7 for free.

Perhaps other cash prizes for distributed computing will

be offered that will get us to breakeven before we get

another factor of 5 in computing power. spike

**Next message:**Spike Jones: "Re: doubling time and singularity"**Previous message:**Damien Broderick: "Jupiter's L1"**In reply to:**Anders Sandberg: "Re: record prime status"**Next in thread:**Curious: "Re: Hearing Meteors?"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]

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