20201023, 19:38  #34  
Nov 2016
100111010000_{2} Posts 
Quote:


20201024, 04:21  #35 
Romulan Interpreter
Jun 2011
Thailand
10001011100100_{2} Posts 
Actually, I believe that 60060 is the best base. It is divisible by a lot of small numbers, and it fits in 16 bits so that you can use an uint32 to multiply two digits in a single clock cycle without loss of precision on many of the 32bit processors nowadays (like ARM and Cortex M).
Hihi. [/trolling] Last fiddled with by LaurV on 20201024 at 04:22 
20201024, 04:30  #36 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
2^{3}·3·5·7^{2} Posts 
There are plenty of symbols available. One look at the Unicode tables will convince you that a lack of symbols is not the problem here.
ETA: Even LaurV's base 60060 can be accommodated with Unicode symbols. If one has the necessary desire. Last fiddled with by retina on 20201024 at 04:32 
20201024, 07:30  #37  
Sep 2006
Brussels, Belgium
63D_{16} Posts 
Quote:
Jacob It it ain't you trolling, but them dozenalers. ;) They forget that most humans have 5 digits and two hands, that the supposed benefits of base 12 don't weight up to having (almost) the whole world change their way of counting, and having to replace (almost) all things displaying numbers... Last fiddled with by S485122 on 20201024 at 07:31 

20201024, 07:58  #38 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
2^{3}·3·5·7^{2} Posts 

20201024, 08:40  #39 
Romulan Interpreter
Jun 2011
Thailand
2^{2}×7×11×29 Posts 
Nope. 16 bits can store a number between 0 and 65535. Why should you bother with negatives? In fact, I explicitly mentioned uint32. Please read again. Here "u" in front of "int" stands for "unsigned".
And for the 13# part, you would need to multiply it by 2, because mersenne classes for k need to be multiple of 4 to have q=2kp+1 be 1 or 7 (mod 8), see discussions in this thread. That's why mfaktc uses 4620 classes (2*11#) and not 2310. This way, you can very fast discard half of the filtered candidates (those which are 3 or 5 (mod 8)) without any test (because they will all be in the same class, which you just ignore), getting things done much faster. Last fiddled with by LaurV on 20201024 at 08:49 
20201024, 09:44  #40  
Sep 2006
Brussels, Belgium
1,597 Posts 
Quote:
Jacob Instead of thinking I mishandled a program : I tried first with another number 2*2*2*3*3*5*7*11*13 But must have typed in something else, then deduced from the 18 bits that your number would use more than 16 while 655536 is a known quantity so closely associated with 16 bits ;) I'd wish somebody deleted that stupid post of mine. 

20201024, 10:14  #41 
Dec 2012
The Netherlands
2^{5}×47 Posts 
We all have moments like that!

20201024, 10:53  #42 
Romulan Interpreter
Jun 2011
Thailand
21344_{8} Posts 
Buddy, you are not alone. All of us have some brain farts regularly, I for sure lead the list and these guys here are all eager and waiting to byte me when that happens. And I, them, haha. But that's the good part of science, when you make mistakes (general you), others correct you, and you realize the mistake, and you learn something from it. Then, next time you know, and can come with something better, therefore helping others in return.
Last fiddled with by LaurV on 20201024 at 10:54 
20201024, 11:16  #43  
Sep 2006
Brussels, Belgium
1,597 Posts 
Quote:
You could say I learned that my brain can "fart", but that is something I know and despair ;) about since a very long time. Also this brain fart is now saved for posterity :D But thanks for your and Nick's nice answers ! Jacob 

20201024, 11:32  #44 
Bamboozled!
"πΊππ·π·π"
May 2003
Down not across
10011111011010_{2} Posts 

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