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Forum: Riesel Prime Search 2021-01-26, 08:21
Replies: 234
Views: 35,251
Posted By a1call
By that logic there would be no justification to...

By that logic there would be no justification to use more than one method, either TF or PRP-Testing on any given range. But that's not the case now, is it?
Both methods are used in practice to weed...
Forum: Computer Games 2021-01-24, 00:44
Replies: 42
Views: 12,573
Posted By a1call
I got started on Pong (what else). Ours would be...

I got started on Pong (what else). Ours would be hooked up to the antenna input of the TV.
https://en.wikipedia.org/wiki/Pong

My all-time favorite was Q*bert. It was a difficult game at 1st. But...
Forum: FermatSearch 2021-01-18, 00:32
Replies: 324
Views: 49,926
Posted By a1call
Been a good year so far for Fermat...

Been a good year so far for Fermat factors.:smile:
Someone should let the owner of this site know:
http://www.prothsearch.com/fermat.html
Forum: Lounge 2021-01-17, 21:17
Replies: 85
Views: 4,096
Posted By a1call
DO NOT TRY THIS AT HOME! ...

DO NOT TRY THIS AT HOME!


https://youtu.be/yTOCAd2QhGg
Forum: Miscellaneous Math 2021-01-13, 07:53
Replies: 8
Views: 461
Posted By a1call
While the concept does not apply to Mersenne...

While the concept does not apply to Mersenne numbers since
valuation(Mn,2)==1

It does apply to Fermat numbers greater than F0.

The following code will find the 1st (a, b) pair for Fermat...
Forum: Miscellaneous Math 2021-01-12, 05:25
Replies: 8
Views: 461
Posted By a1call
Some more insights from the future (just...

Some more insights from the future (just kidding:smile:).
So it turns out that the number of (a, b) pairs for each n is a function of number of prime factors of n.
If n is prime or otherwise a...
Forum: Miscellaneous Math 2021-01-05, 06:41
Replies: 8
Views: 461
Posted By a1call
So it turns out it's just trial factoring. ...

So it turns out it's just trial factoring.
Mod(a,p)/k will fail to evaluate if k has a prime cofactor with p.:smile:
Forum: Miscellaneous Math 2021-01-05, 01:00
Replies: 9
Views: 245
Posted By a1call
Not sure if it is of any value but regardless to...

Not sure if it is of any value but regardless to State the obvious:
Mod(39, 2047)^11 == 1
Is another way of saying
(2^11-1) | 39^11-1
Now if I am not mistaking
39-1 | 39^11-1
The candidate...
Forum: Lounge 2021-01-03, 01:04
Replies: 1,664
Views: 100,858
Posted By a1call
The important thing to keep in mind is that the...

The important thing to keep in mind is that the majority of people recover from the disease. So regardless, statistics are on your side.
Forum: Miscellaneous Math 2021-01-02, 05:29
Replies: 8
Views: 461
Posted By a1call
Nah, unfortunately you will have to set theDepth...

Nah, unfortunately you will have to set theDepth parameter very high for large numbers which will make the process unusable for larger numbers. That is unless someone can figure out the mechanics of...
Forum: Lounge 2021-01-02, 02:45
Replies: 1,632
RIP
Views: 129,020
Posted By a1call
That is indeed a shame. There is now absolutely...

That is indeed a shame. There is now absolutely no way you could embed an animation or video in a PDF file. A lot of 3D-PDF interactivity is also gone for good.
To make things worse that was one my...
Forum: Miscellaneous Math 2021-01-02, 01:56
Replies: 8
Views: 461
Posted By a1call
Re: Hint #4 if m=Mod(a,p) Unless p is prime,...

Re: Hint #4
if m=Mod(a,p)
Unless p is prime, iterations of
m=m/c
where c iterates from (p-1)/2 to 2 or vise versa will definitely fail to evaluate at some point which is what the code...
Forum: Miscellaneous Math 2021-01-02, 00:48
Replies: 8
Views: 461
Posted By a1call
Hint #2: For all positive integers p where...

Hint #2:
For all positive integers p where valuation(p-1,2)==1
,
Mod( ((p-1)/2)! , p) == 1 || Mod( ((p-1)/2)! , p-1)

if and only if p is prime

Hint #3:
For all primes p where...
Forum: Miscellaneous Math 2021-01-01, 22:31
Replies: 8
Views: 461
Posted By a1call
minus Happy New Year & There are just not enough Numerological Threads

\\\\DSN-320-A-Pari-GP Code By Rashid Naimi 1/1/2121 >>>>>>>>>>>>>>>Error caught by Krisel. Now I have to reweight all the post dated checks for the year

primeCounter=0
compositeCounter=0...
Forum: Lounge 2021-01-01, 20:10
Replies: 1,273
Views: 85,600
Posted By a1call
In Quebec they say they will start deciding who...

In Quebec they say they will start deciding who gets medical care and who doesn't when the ICU use reaches 200% which they expect to be shortly. I also heard in the news (can't recall location) that...
Forum: Science & Technology 2020-12-31, 21:05
Replies: 63
Views: 2,113
Posted By a1call
We have a staying in Persian: The cat can't...

We have a staying in Persian:
The cat can't reach the meat so he says it stinks.
Population is certainly a factor In terms of available supplies. But surely they have the same logistics challenges...
Forum: Science & Technology 2020-12-31, 20:33
Replies: 63
Views: 2,113
Posted By a1call
In this list there are 233-101=132 countries with...

In this list there are 233-101=132 countries with populations less than Israel:
https://en.wikipedia.org/wiki/List_of_countries_by_population_(United_Nations)

While a factor it is not the only...
Forum: Science & Technology 2020-12-31, 19:52
Replies: 63
Views: 2,113
Posted By a1call
It is fascinating that Israel has vaccinated (1st...

It is fascinating that Israel has vaccinated (1st dose to be exact) close to 10% of its population already while other countries who generally consider themselves super-powers or otherwise on top of...
Forum: Science & Technology 2020-12-29, 03:08
Replies: 63
Views: 2,113
Posted By a1call
IMHO it is inexcusable that there should be any...

IMHO it is inexcusable that there should be any prioritizing at all. It only indicates that there is not enough resources allocated to vaccine production/distribution. By vaccinating and...
Forum: Lounge 2020-12-27, 19:17
Replies: 1,273
Views: 85,600
Posted By a1call
https://www.ctvnews.ca/mobile/health/coronavirus/c...

https://www.ctvnews.ca/mobile/health/coronavirus/confirmed-cases-of-new-covid-19-variant-in-canada-are-unsurprising-experts-say-1.5245376
Forum: Lounge 2020-12-25, 19:18
Replies: 1,273
Views: 85,600
Posted By a1call
C<U<S => S<C Canada bans flights from UK ...

C<U<S => S<C

Canada bans flights from UK
UK bans fights from South Africa
Canada does not ban flights from South Africa (AFAIK):smile:
Forum: Forum Feedback 2020-12-24, 00:19
Replies: 24
Views: 564
Posted By a1call
Not sure if this will help but I have had similar...

Not sure if this will help but I have had similar issues with file names in Korean font which were zipped. The issue was that windows native unzipper is not able to decode the font. Using a more...
Forum: Lounge 2020-12-23, 06:28
Replies: 1,273
Views: 85,600
Posted By a1call
https://news.sky.com/story/amp/covid-19-new-strain...

https://news.sky.com/story/amp/covid-19-new-strain-found-in-denmark-netherlands-and-australia-says-who-12169262

My 2 cents, this is usually the way viruses eventually die down naturally. But to be...
Forum: Lounge 2020-12-21, 13:13
Replies: 6
Views: 289
Posted By a1call
Not yet from scratch. Let me know when you...

Not yet from scratch.
Let me know when you create a single living cell without taking existing generic material.:smile:
Forum: Lounge 2020-12-20, 12:22
Replies: 1,273
Views: 85,600
Posted By a1call
I wonder what's the hesitation from the rest of...

I wonder what's the hesitation from the rest of the world for.
Would expect Australia and New Zealand to follow soon.
Late reaction last time is what put the world in the pandemic situation.
OTOH,...
Showing results 1 to 25 of 1000

 
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