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Forum: Languages -- Ancient & Modern, Human & Machine 2020-09-28, 18:19
Replies: 50
Views: 3,960
Posted By Batalov
w00t A certain scientific confererence set up the...

A certain scientific confererence set up the abstract template and instead of the usual latin placeholder (Lorem Ipsum Dolor Sit Amet etc) they used:


A bold passage including pimps and...
Forum: Miscellaneous Math 2020-09-22, 16:26
Replies: 55
Views: 1,727
Posted By Batalov
not a "Universal primality test" so far, by a mile

You asked if there was a proof for "if p prime, <bla>". That proof exists.

Ergo, it is a PRP test, that's fine. Yet another one to add to hundreds of others. And an unmeasuredly slow one, as far...
Forum: Abstract Algebra & Algebraic Number Theory 2020-09-21, 03:23
Replies: 7
Views: 320
Posted By Batalov
w00t Ah, it brings so many childhood memories. The...

Ah, it brings so many childhood memories. The year was 1980 and I thought it was interesting to compute many digits of π. Because I was only in 8th grade, my first implementation was based on [$]6 \...
Forum: Miscellaneous Math 2020-09-12, 19:55
Replies: 3
Views: 196
Posted By Batalov
The reasoning behind posting here on this forum...

The reasoning behind posting here on this forum can be found here:

Very consistent.
Forum: Factoring 2020-09-11, 01:24
Replies: 23
Views: 954
Posted By Batalov
Many more Mersenne non-primes have a thousand...

Many more Mersenne non-primes have a thousand factors. And even more have a million factors! :rolleyes:
Infinity is a rather large thing.
Forum: Number Theory Discussion Group 2020-09-09, 06:30
Replies: 3
Views: 299
Posted By Batalov
w00t All you need is ü(x,y) = x2-y2 (and throw away...

All you need is ü(x,y) = x2-y2 (and throw away f() and g() ).
ü(x,y) "covers" all primes > 2
Forum: Hardware 2020-09-06, 20:43
Replies: 10
Views: 517
Posted By Batalov
Pushkin would recommend against it:

Pushkin would recommend against it:
Forum: Alberico Lepore 2020-09-05, 09:21
Replies: 15
Views: 708
Posted By Batalov
What method? "Where is the method, Lebowski?...

What method? "Where is the method, Lebowski? Where are the factors? We need those factors! "

"Where's the money, Lebowski?" -- "It's down there somewhere, let me take another look."
Forum: Lounge 2020-09-05, 09:06
Replies: 1,037
Views: 59,241
Posted By Batalov
Thumbs up I feel dumb when I thought that no one cared....

I feel dumb when I thought that no one cared. Thank you for this gem (excellently combining two memes).

Lukashenko had a pretty dumb joke ('anecdote style') but it is lost in translation; to enjoy...
Forum: Miscellaneous Math 2020-09-05, 00:20
Replies: 3
Views: 366
Posted By Batalov
An ounce of research is worth a ton of scripting.

An ounce of research is worth a ton of scripting.
Forum: enzocreti 2020-09-01, 08:02
Replies: 20
Views: 439
Posted By Batalov
Do. Not. Guess. There are no guesses in math. ...

Do. Not. Guess.
There are no guesses in math.
log102 is irrational and just happens to be locally close to 0.3 and that is the only reason that there is some local periodicity of modulos w.r.t. n. ...
Forum: enzocreti 2020-09-01, 07:48
Replies: 20
Views: 439
Posted By Batalov
Divisible by 71. Divisible by 14437. ...

Divisible by 71.


Divisible by 14437.


Correct.

How about a 2 weeks ban?
Forum: enzocreti 2020-08-31, 18:15
Replies: 20
Views: 439
Posted By Batalov
Exclamation MOD NOTE: next cry of "Fire!" in a cinema theater...

MOD NOTE: next cry of "Fire!" in a cinema theater will be punished by a detention.

People do come to this forum to find news of a, say, next Mersenne prime (which are now pre-screened as PRPs), so...
Forum: enzocreti 2020-08-31, 18:03
Replies: 20
Views: 439
Posted By Batalov
... ... Easily sniped.

... ... Easily sniped.
Forum: Puzzles 2020-08-29, 22:22
Replies: 20
Views: 1,035
Posted By Batalov
I would like to contrast the next two sets of two...

I would like to contrast the next two sets of two statements each (can be printed on a card).

(Jourdain)
Suppose there is a card with statements printed on both sides:
Front: The sentence on the...
Forum: enzocreti 2020-08-29, 19:33
Replies: 11
Views: 471
Posted By Batalov
Lightbulb Btw, solving this famous google aptitude test...

Btw, solving this famous google aptitude test alone is fairly impossible (I mean the exact answer) - one has to have a very solid background (one can find a solution on the web, and no, it cannot be...
Forum: enzocreti 2020-08-29, 19:03
Replies: 11
Views: 471
Posted By Batalov
Don't feel bad -- I am easy to snipe too. ...

Don't feel bad -- I am easy to snipe too.

And I will dispense the single reason why periodicity easily enters the pg(n) sequence, and why it is apparent that it is a totally irrelevant...
Forum: enzocreti 2020-08-29, 18:31
Replies: 11
Views: 471
Posted By Batalov
You guys are so easy to "snipe" (see this...

You guys are so easy to "snipe" (see this https://xkcd.com/356/ ).

When you deal with any enzocreti's posts, you have to remeber just 2-3 numbers (one of them "546"), and once you see any...
Forum: Lounge 2020-08-27, 06:12
Replies: 966
Views: 50,115
Posted By Batalov
These guys managed to amalgamate everything "Spy"...

These guys managed to amalgamate everything "Spy" (from Pink Panther to Bond and more and more) into this -
ERA2eVemjPo
Can't get it out of my head :rolleyes:
Forum: Factoring 2020-08-26, 20:37
Replies: 5
Views: 440
Posted By Batalov
There are different heuristics, they depend on a...

There are different heuristics, they depend on a lot of factors/considerations.
Usually. people pre-factor with TF, ECM etc until X% of the SNFS-complexity, or of GNFS-size. (where X varies between...
Forum: Factoring 2020-08-26, 20:05
Replies: 5
Views: 440
Posted By Batalov
These are found by NFS method...

These are found by NFS method (https://en.wikipedia.org/wiki/General_number_field_sieve).
Mersenne numbers are a subset of the Cunningham project (https://homes.cerias.purdue.edu/~ssw/cun/), where...
Forum: Miscellaneous Math 2020-08-24, 18:17
Replies: 6
Views: 549
Posted By Batalov
Of course it can! 2n + 1 = (n+1)2 - n2

Of course it can! 2n + 1 = (n+1)2 - n2
Forum: Puzzles 2020-08-24, 09:05
Replies: 13
Views: 918
Posted By Batalov
There is one site that has slightly higher...

There is one site that has slightly higher resolution scans, http://joyful-art.blogspot.com/2013/09/drawings-of-leonardo-da-vinci.html
They do look flipped (or they are printed engravings?); the...
Forum: Miscellaneous Math 2020-08-23, 05:23
Replies: 10
Views: 779
Posted By Batalov
Cool I didn't want to upset him :-) (and he...

I didn't want to upset him :-)

(and he didn't reveal what he was doing until later. I wanted to get him to open up... and I did. For my little project a few years...
Forum: Software 2020-08-23, 00:59
Replies: 375
Sticky: Prime95 v30.3
Views: 19,219
Posted By Batalov
Sheesh! That's what already happened - it had...

Sheesh! That's what already happened - it had been run and you got 20+ complaint messages. :-)

Time to think? Or to continue sawing off the branch that you sit on?

Also, a month has not...
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