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Forum: Miscellaneous Math 2020-11-27, 22:52
Replies: 15
Views: 210
Posted By a1call
Well here is the link to wiki and yes it is...

Well here is the link to wiki and yes it is written in a Klingon dialect with which I am not familiar.:smile:

I will spend some time to see if I can decipher the numeric example but don't hold...
Forum: Miscellaneous Math 2020-11-27, 22:45
Replies: 15
Views: 210
Posted By a1call
Links to Batalov's relevant primes: Kudos. ...

Links to Batalov's relevant primes: Kudos.

https://primes.utm.edu/primes/page.php?id=123041

https://primes.utm.edu/primes/page.php?id=118775

I see N-1 in both notes.:smile:
Forum: Miscellaneous Math 2020-11-27, 11:47
Replies: 15
Views: 210
Posted By a1call
I assume you prove them prime by ruling out the...

I assume you prove them prime by ruling out the existence of prime factors less than or equal to square root of N.
But please correct me if I am wrong.
I assume elliptic curve testing does the same...
Forum: Miscellaneous Math 2020-11-27, 04:51
Replies: 15
Views: 210
Posted By a1call
I assume there must be much lager ones recorded...

I assume there must be much lager ones recorded at Top-5k.
But we can leave it at that. My primary objective was to find out alternative methods to N+/-1 if any. I guess it is pretty much them and...
Forum: Miscellaneous Math 2020-11-27, 03:34
Replies: 15
Views: 210
Posted By a1call
Yes, I forgot about that because I don't...

Yes, I forgot about that because I don't understand it.
Thanks for the refresher.
Forum: Miscellaneous Math 2020-11-27, 02:57
Replies: 15
Views: 210
Posted By a1call
Thank you for that. I think there is a good...

Thank you for that.
I think there is a good chance that I am not the only one who has never heard of a partition of a number before.
If so:...
Forum: Miscellaneous Math 2020-11-27, 01:14
Replies: 15
Views: 210
Posted By a1call
Largest Known Prime N such that ...

Hey all,
What is the largest known Prime N such that nighter neither all-the-Prime-factors of N+1 nor N-1 are known?
Not looking for a probable-Prime here.

I assume the only way to prove a such...
Forum: Lounge 2020-11-24, 04:36
Replies: 1,146
Views: 63,610
Posted By a1call
https://www.iheartradio.ca/cjad/news/urgences-sant...

https://www.iheartradio.ca/cjad/news/urgences-sante-paramedics-told-not-to-resuscitate-certain-patients-at-height-of-pandemic-report-1.14014612
Forum: Science & Technology 2020-11-21, 15:53
Replies: 38
Views: 766
Posted By a1call
And I remember reading this (at the time) which...

And I remember reading this (at the time) which some may get a kick out of:

Arecibo message (https://en.m.wikipedia.org/wiki/Arecibo_message)
Forum: Science & Technology 2020-11-20, 13:16
Replies: 38
Views: 766
Posted By a1call
You would think that in the 21st century with all...

You would think that in the 21st century with all the computer modeling and simulations and FEAs, Structural-Engineering would be an exact-Science. It is anything but.
Forum: y-cruncher 2020-11-18, 05:38
Replies: 33
Views: 16,880
Posted By a1call
Billion had two different meanings in English and...

Billion had two different meanings in English and French Canada:

https://en.m.wikipedia.org/wiki/Billion
Forum: And now for something completely different 2020-11-14, 11:51
Replies: 9
Views: 255
Posted By a1call
Remove the +/-1 and add +/-k and divide by k...

Remove the +/-1 and add +/-k and divide by k where k | x!^n

Things will get interesting Ali candidates will be proveable via N-/+1 method since they will be of form where N has prime factors equal...
Forum: FermatSearch 2020-11-12, 12:29
Replies: 58
Views: 2,712
Posted By a1call
See definitions other than 1b: ...

See definitions other than 1b:

https://www.merriam-webster.com/dictionary/calculus
Forum: FermatSearch 2020-11-11, 04:46
Replies: 58
Views: 2,712
Posted By a1call
Just claimed last week.:smile: Winning the...

Just claimed last week.:smile:
Winning the lottery is one thing winning $70M on 1st try is something completely different.



https://beta.ctvnews.ca/local/montreal/2020/11/6/1_5177970.html
Forum: Lounge 2020-11-06, 04:42
Replies: 1,146
Views: 63,610
Posted By a1call
I found this article informative. Perhaps...

I found this article informative.
Perhaps others might as well:




https://www.bbc.com/news/health-51665497
Forum: enzocreti 2020-10-30, 05:34
Replies: 10
Views: 362
Posted By a1call
Well it is hypothetical and very unlikely to...

Well it is hypothetical and very unlikely to happen. But I think it would be very difficult to fill the resulting void of purpose and activity on this board. It would render all the distributed...
Forum: enzocreti 2020-10-29, 17:09
Replies: 10
Views: 362
Posted By a1call
Now that would be a very hard pill to swallow...

Now that would be a very hard pill to swallow around here.:smile:
Forum: Lounge 2020-10-25, 21:28
Replies: 74
Views: 2,308
Posted By a1call
https://www.telegraph.co.uk/science/2017/07/14/wor...

https://www.telegraph.co.uk/science/2017/07/14/worlds-indestructible-creature-tardigrade-will-alive-earth/



https://en.m.wikipedia.org/wiki/Tardigrade
Forum: Lounge 2020-10-24, 19:47
Replies: 74
Views: 2,308
Posted By a1call
https://en.m.wikipedia.org/wiki/Codariocalyx_motor...

https://en.m.wikipedia.org/wiki/Codariocalyx_motorius

Realtime video:

https://youtu.be/Ta4I5Uwv9m0
Forum: ONeil 2020-10-23, 02:55
Replies: 28
Views: 822
Posted By a1call
Meant 2^p-1 If for any prime p 2*p+1 | 2^p-1...

Meant 2^p-1
If for any prime p
2*p+1 | 2^p-1
Then 2*p+1 is definitely prime.
The test is deterministic and computationally about as expensive as a PRP test for 2*p+1.
The time saved is not...
Forum: ONeil 2020-10-23, 02:53
Replies: 28
Views: 822
Posted By a1call
Meant 2^p-1 If for any prime p 2*p+1 | 2^p-1...

Meant 2^p-1
If for any prime p
2*p+1 | 2^p-1
Then 2*p+1 is definitely prime.
The test is deterministic and computationally about as expensive as a PRP test.
Forum: ONeil 2020-10-23, 02:32
Replies: 28
Views: 822
Posted By a1call
To see if 2p+1 divides 2*p-1 is computationally...

To see if 2p+1 divides 2*p-1 is computationally about as expensive as a PRP test. It is deterministic but not much, much faster than a PRP test and then a N-1 test.
I learned about it from SM and...
Forum: ONeil 2020-10-23, 01:49
Replies: 28
Views: 822
Posted By a1call
I think what he is referring to is that a factor...

I think what he is referring to is that a factor of 2^p-1 is prime if (single"f") it is equal to 2p+1.:smile:
Forum: Lounge 2020-10-21, 14:22
Replies: 74
Views: 2,308
Posted By a1call
I think it's time to change my hearing aid's...

I think it's time to change my hearing aid's battery.:smile:
Apologies for the misunderstanding.
Forum: Lounge 2020-10-21, 10:37
Replies: 74
Views: 2,308
Posted By a1call
Avocados can be poisonous to horses. Nasty stuff....

Avocados can be poisonous to horses. Nasty stuff.

https://ker.com/equinews/avocados-can-toxic-horses/
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