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Search: Posts Made By: Batalov
Forum: Hobbies 2021-03-04, 19:24
Replies: 1
Views: 59
Posted By Batalov
Hanayama Quartet is pretty good.

Hanayama Quartet is pretty good.
Forum: Miscellaneous Math 2021-03-04, 19:19
Replies: 3
Views: 92
Posted By Batalov
It is a shame that the b-file is only up to...

It is a shame that the b-file is only up to n=1000.
Definitely needs to be extended to 10000.
Forum: Miscellaneous Math 2021-03-04, 06:58
Replies: 7
Views: 165
Posted By Batalov
Ah, found your problem. Counting is hard! ...

Ah, found your problem. Counting is hard!
:barbie:
Forum: chalsall 2021-03-03, 18:20
Replies: 10
Views: 311
Posted By Batalov
https://www.fiverr.com/ !!

https://www.fiverr.com/ !!
Forum: FermatSearch 2021-03-02, 01:50
Replies: 332
Views: 54,482
Posted By Batalov
:thumbs-up:

:thumbs-up:
Forum: Miscellaneous Math 2021-02-27, 02:08
Replies: 11
Views: 385
Posted By Batalov
First of all, this is simply false*, and secondly...

First of all, this is simply false*, and secondly what does it have to do with the subject of this thread!?
Only prime n are of interest for this thread, and for them gcd() is "1", and Phi() is...
Forum: sweety439 2021-02-26, 02:35
Replies: 1,215
Views: 60,818
Posted By Batalov
Thumbs down This is getting silly! (Cue Monty Python...

This is getting silly! (Cue Monty Python Lieutenant).

Get yourself a web site not dissimilar to "norpimeslefbehind" and do this trivially-small-but changing-every-day maintenance there! Yourself. ...
Forum: Reading 2021-02-25, 23:49
Replies: 15
Views: 2,834
Posted By Batalov
I remember that we had the first wave of the...

I remember that we had the first wave of the series' impressions; I will not repeat what I wrote there. In short, it was heart-touchingly accurate (I'd lived in those times, though not in Chernobyl;...
Forum: Lounge 2021-02-23, 09:25
Replies: 1,100
Views: 85,946
Posted By Batalov
Where is 111 less than 99? A: on the...

Where is 111 less than 99?

A: on the microwave time pad. 111 will be 1:11, but 99 will be 99s.
Forum: Reading 2021-02-22, 23:30
Replies: 15
Views: 2,834
Posted By Batalov
Lightbulb Amusing: A tell-tale typo! Chernobyl =...

Amusing: A tell-tale typo!

Chernobyl = Чернобыль = "Black tale"
Chrenobyl = Хренобыль = "хреновая быль" =(is a universal euphemism for:) "х...вая быль" = "f...ing bad tale"

Not really; it...
Forum: Miscellaneous Math 2021-02-22, 01:56
Replies: 10
Views: 334
Posted By Batalov
Thumbs down Really? So if p=11 is a prime number, then...

Really?
So if p=11 is a prime number, then 2^11-1 "is always prime number"?
Forum: Information & Answers 2021-02-20, 23:51
Replies: 11
Views: 880
Posted By Batalov
Lightbulb This message (below) casts serious doubt even on...

This message (below) casts serious doubt even on the statement above!
Forum: GPU Computing 2021-02-20, 22:46
Replies: 12
Views: 530
Posted By Batalov
If one of the fans stops, then it is near the end...

If one of the fans stops, then it is near the end of its lifetime. Just like any fan (even the old airplane propeller) - do help it to start again by flicking it in its intended direction (may need...
Forum: GPU Computing 2021-02-18, 01:24
Replies: 12
Views: 530
Posted By Batalov
This noise is the sound from ball bearing (or...

This noise is the sound from ball bearing (or similar. needle bearing etc) support for the fans.

There are some (temporary) solutions: e.g. you carefully press into the center of the fan's head;...
Forum: Miscellaneous Math 2021-02-17, 21:38
Replies: 32
Views: 1,391
Posted By Batalov
This thread is still not in Misc.Math? :rolleyes:

This thread is still not in Misc.Math? :rolleyes:
Forum: Miscellaneous Math 2021-02-17, 01:42
Replies: 2
Views: 153
Posted By Batalov
Question Why can't I find this formula in Wiki or Wolfram? (pet peeve)

For Lucas numbers:
[$]{L(3n) \over L(n)} = L(2n)-(-1)^n[/$]
...or if n is even, simpler still: [$]{L(6m) \over L(2m)} = L(4m)-1 [/$]

For example: this simplifies L2250 (or primV(2250)) cofactor...
Forum: Homework Help 2021-02-17, 00:42
Replies: 8
Views: 571
Posted By Batalov
Lightbulb Here it is: Let's demonstrate this on a...

Here it is:


Let's demonstrate this on a greatly simplified example:
1. I want to find the density of primes of kind k * n with k=4 (for example), "... based purely on the prime number theorem...
Forum: Miscellaneous Math 2021-02-16, 09:29
Replies: 72
Views: 2,281
Posted By Batalov
I still think that he is fixing his wristwatch...

I still think that he is fixing his wristwatch (https://en.wikipedia.org/wiki/Hatter_(Alice's_Adventures_in_Wonderland)) with a bread knife...
Forum: Homework Help 2021-02-16, 09:17
Replies: 8
Views: 571
Posted By Batalov
You ask one question, and then you ask a...

You ask one question, and then you ask a different question.

For you question about k * 2^n - 1, obviously depends on k. There exist some k values for which the answer is a constant. (zero!)
Forum: Homework Help 2021-02-16, 08:59
Replies: 8
Views: 571
Posted By Batalov
See Lenstra-Pomerance conjecture in...

See Lenstra-Pomerance conjecture in https://primes.utm.edu/notes/faq/NextMersenne.html or Wiki...
Forum: Science & Technology 2021-02-16, 08:53
Replies: 118
Views: 5,495
Posted By Batalov
Lightbulb Interesting - It seems that the antibody test...

Interesting - It seems that the antibody test that BloodBank uses (after blood donation; namely "Vitros Total Anti-SARS-CoV-2"; it tests against S1 protein) becomes positive after Moderna vac.
Some...
Forum: Software 2021-02-15, 02:44
Replies: 11
Views: 428
Posted By Batalov
Smile "No, I mean, turn to your left right now!" ...

"No, I mean, turn to your left right now!"
"What, left?"
"Right!!"
Forum: Hardware 2021-02-14, 07:17
Replies: 2
Views: 276
Posted By Batalov
Try...

Try https://www.pc-specs.com/cpu/Intel/Xeon/Xeon_Processor_W3670/2329/Compatible_Motherboards ?
Newegg seems to have some refurbs for sale, but because this chip is from 2010 it might get tricky to...
Forum: Homework Help 2021-02-13, 19:53
Replies: 3
Views: 298
Posted By Batalov
Lightbulb This reminds me of the George Pólya book How to...

This reminds me of the George Pólya book How to Solve It (https://en.wikipedia.org/wiki/How_to_Solve_It).
Everyone could do very well by reading it. (Some time in their life, I mean.)
Nick's...
Forum: Cunningham Tables 2021-02-12, 23:52
Replies: 17
Views: 1,686
Posted By Batalov
The latter. (Usually Sam did that ecm'ming...

The latter. (Usually Sam did that ecm'ming himself; recently he started opening these to the public. You can safely assume that a t55 level is definitely already done on all of these.)

It does...
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