[QUOTE=aurashift;404449]That's part of why I decided to switch everything that has AVX over to 2 core 100M workers.[/QUOTE]

Let's be honest with ourselves... The chances of anyone finding a 100M DIGIT MP within our lifetimes is extremely small.

Heck, the last MP found (57885161) was estimated by some to have cost Curtis' University over a million dollars in electricity.

Not being negative here, just objective. Until we really get many qbits, this is going to be the case.

So, then, why do we do this?

For some because it's fun. For some others because it is a driving problem for distributed computing and algorithms. For some others because they don't understand the space which needs to be explored....

If I had a very underpowered spaceship and a swath of unexplored space I'd still go explorin'....but I don't because of the fkin dark ages so this will have to suffice. :banana:

[QUOTE=chalsall;404451]Let's be honest with ourselves... The chances of anyone finding a 100M DIGIT MP within our lifetimes is extremely small.

Heck, the last MP found (57885161) was estimated by some to have cost Curtis' University over a million dollars in electricity.

Not being negative here, just objective. Until we really get many qbits, this is going to be the case.

So, then, why do we do this?

For some because it's fun. For some others because it is a driving problem for distributed computing and algorithms. For some others because they don't understand the space which needs to be explored....[/QUOTE]

[URL="https://cliffnotesdotco.files.wordpress.com/2014/10/dumb-dumber.jpg"]https://cliffnotesdotco.files.wordpress.com/2014/10/dumb-dumber.jpg[/URL]

[QUOTE=chalsall;404451]
Heck, the last MP found (57885161) was estimated by some to have cost Curtis' University over a million dollars in electricity..[/QUOTE]

That estimate seems high.

I run 4 computers and 2 GPUs at about 1000 watts. 24kwh * $0.13 is $3.12 per day or $1140 / year. Curtisc is doing 69x my output according to top producers. Be generous and round that up to 100. That's $114,000 / yr -- less than $500,000 for 4 years.

That does not include A/C costs. However, I'll bet the University is not running power hungry GPUs and they have a much better electric rate than I do.

[QUOTE=Prime95;404481]That estimate seems high.

I run 4 computers and 2 GPUs at about 1000 watts. 24kwh * $0.13 is $3.12 per day or $1140 / year. Curtisc is doing 69x my output according to top producers. Be generous and round that up to 100. That's $114,000 / yr -- less than $500,000 for 4 years.

That does not include A/C costs. However, I'll bet the University is not running power hungry GPUs and they have a much better electric rate than I do.[/QUOTE]

Notice that those computers must be powered on at least 12 hours a day in order to perform other tasks. Otherwise the University would not have bought those machines. So you will need to halve the power consumption estimation for GIMPS.

[QUOTE=chalsall;404451]Let's be honest with ourselves... The chances of anyone finding a 100M DIGIT MP within our lifetimes is extremely small.[/QUOTE]

Speak for yourself. I for one plan to be around for the next 100 years at least. I think even a billion digit MP is quite within the conservative realm of possibility.

[QUOTE=Uncwilly;404379]I noticed several in the 80 bit range that you found. :tu:[/QUOTE]

103 bit [url]http://www.mersenne.ca/exponent/332213177[/url]

[URL="http://www.mersenne.org/report_exponent/?exp_lo=332406203&full=1"]one more done, 332406203. There's one more coming in a few days and then after that we won't see any 100M exponents from me for a few hundred more days....[/URL]

Here is the status report for the range from 332192831 to 332399999 (plus other data out to 332999999):

[code]Date of data 2015/07/20
Average bit depth for first 100 expos 78.96
Average bit depth for first 1000 expos 78.03
Average bit depth for first 5000 expos 76.03
Average bit depth for first 10000 expos 75.10
100th active expo (no factor found) 332198443 (first change in 2.5 years)
1000th active expo (no factor found) 332247361
5000th active expo (no factor found) 332447981
10000th active expo (no factor found) 332695031
Unitless total effort number 342,556,672
Number of first 100 expos to 2^79 80
Number of first 1000 expos to 2^78 663
Number of first 5000 expos to 2^77 1429
Number of first 10000 expos to 2^76 3040
Number left in range 4046

Estimated expos in range to be removed 138
(by taking all expos to 2^79)
Estimated expos in range to be removed 280
(by taking all expos to 2^82)
[/code]
[code]Bit # at bit level
73 0
74 310
75 1127
76 1233
77 482
78 180
79 668
80 31
81 13
82 0
83 1
84 0
85 1
P-1 542[/code]
For the following bit levels, these are the 'hold-up' numbers (they are the lowest exponent that is factored to less than the indicated bit level.
80 - 332192831
79 - 332192969
78 - 332201731
77 - 332206073
76 - 332288227
75 - 332351161

bam. [url]http://www.mersenne.org/report_exponent/?exp_lo=332200543&full=1[/url]

If you haven't seen them yet, these mersenne.info-inspired reports are early (read: alpha) stage, but they're coming along:[list][*][url=http://www.mersenne.ca/status/tf/0/4/33200]M332.0 to M332.9 range TF levels[/url][*][url=http://www.mersenne.ca/status/tf/2/4/33200]change since 2 days ago[/url][/list]Any issues should be reported in [url=http://www.mersenneforum.org/showthread.php?t=16727]this thread[/url].