[QUOTE=davieddy;258238]Could what?

David

PS some pianos have 88 keys.

[url=http://www.youtube.com/watch?v=JNCWhdYmPoE]give me a bit of that piano on thos 88s[/url].

David[/QUOTE]


Could my idea on the needs of the other factor in the lucas lehmer sequence be of use! The 88 is my birth year, But I do know some keyboard. If I figure how to make sheet music on here maybe I'll try it later.

Thanks for the endorsement
 

[QUOTE=petrw1;258220]Seems to be supported by a recent observation that we are quite linearly completing LL for three 1-Million ranges per year.
[URL]http://www.mersenneforum.org/showthread.php?p=257772#post257772[/URL]
[URL]http://www.mersenneforum.org/showpost.php?p=257785&postcount=14[/URL]

and this chart
[URL]http://v5www.mersenne.org/report_classic/[/URL]
which I interpret to say we have about 27 more 1-Million ranges up to 79.3M which should talke 9 years at the rate of 3 per year and from which we expect to find 1.265 more Mersenne Primes.[/QUOTE]

My point really is that to maintain a MP per 6 years requires
1.06^3 speed increase per year.
One for the iterations, one for the time per iteration, and
one for the probabily.
Make that [URL="http://www.youtube.com/watch?v=R7llu2aQRSQ"]Log for my Baby and one more for the Road[/URL]

When (2008?) George wagered 50/50 with his interviewer on TV that
we wouldn't find another before 2012, that was a fair bet.

OK he lost.

But if we take the "half life" of the exponent to be about a ratio of 1.3,
he was near the mark.
We have hit a run of "7+ heads in a row". This is to be expected in
256 tosses of a coin. Not too freakish in 47 tosses.

David

So I should madly go out and blow another grand on computational lottery tickets? (In the form of CPU with GPU and Mobo, RAM, case, and electricity to support prime95/mfaktc/CUDAlucas etc?)

[QUOTE]I find it irritating that the CAPS LOCK button is adjacent to the SHIFT button.[/QUOTE]If you run Windows, you can use [URL="http://technet.microsoft.com/en-us/sysinternals/bb897578"]this[/URL]. In Linux it is trivial to remap keys.

[QUOTE=Christenson;258257]So I should madly go out and blow another grand on computational lottery tickets? (In the form of CPU with GPU and Mobo, RAM, case, and electricity to support prime95/mfaktc/CUDAlucas etc?)[/QUOTE]
Yes, just provided someone offers a prize 500,000 times the cost of
an LL test.

David

[QUOTE=Xyzzy;258262]If you run Windows, you can use [URL="http://technet.microsoft.com/en-us/sysinternals/bb897578"]this[/URL]. In Linux it is trivial to remap keys.[/QUOTE]When my eldest son was 8 or 9, I gave him my old Spectrum to play with.
Only trouble was the top right 8 keys had ceased to work.

He succeeded in replicating their functions via obscure combinations
of keys (memorized).
I would grudgingly write on a school report "Shows promise".

David

We used a typewriter until our senior year of high school. We had a computer for several years prior to that but we could never afford a printer.

Anyways, the typewriter was missing the "G" key, so we became quite proficient in the use of the thesarus.

Also, when we had a report to do, we used to ask the teacher to make sure whatever the report was about happened before 1956, since we had a complete 1956 edition of the Encyclopædia Britannica that we purchased at a yard sale for 10 dollars.

[QUOTE=davieddy;258271]Yes, just provided someone offers a prize 500,000 times the cost of
an LL test.

David[/QUOTE]
Well, that means the LL test has to cost about 20 cents, since a reasonable estimate of the effect of finding M48 is $100K in the positive direction.

Now Xilman would offer me the electricity for nearly free, since the waste heat warms his cold house, so we need to get 500LL tests out of a $100 CUDA card...might take a decade...

But I'm only human, therefore boundedly rational, and might want the toy!