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Search: Posts Made By: Batalov
Forum: FactorDB 2022-08-13, 22:19
Replies: 573
Views: 108,304
Posted By Batalov
Syd (the DB owner) has various limits for his...

Syd (the DB owner) has various limits for his available resources. This one is above the limit (it would eat up more CPU time, that he has).
N+1 proof doesn't error - it rejects with the message...
Forum: Aliquot Sequences 2022-08-05, 01:30
Replies: 3,698
Views: 442,721
Posted By Batalov
Taking 199152

Taking 199152
Forum: Lounge 2022-08-04, 05:37
Replies: 119
Views: 7,236
Posted By Batalov
Talking too easy!

too easy!
Forum: And now for something completely different 2022-08-04, 01:37
Replies: 49
Views: 10,655
Posted By Batalov
Should this sequence be finite or infinite? ...

Should this sequence be finite or infinite?
[/QUOTE]
I have concerns about your reading comprehension.

Maybe A355956 tells something on this subject? Ah... wait...!
Forum: FactorDB 2022-08-04, 01:32
Replies: 573
Views: 108,304
Posted By Batalov
It's not just you! factordb.com...

It's not just you! factordb.com (https://downforeveryoneorjustme.com/factordb.com) is down.
Forum: And now for something completely different 2022-08-02, 22:59
Replies: 49
Views: 10,655
Posted By Batalov
Lightbulb {parody of some folks' posts} But... but.. if...

{parody of some folks' posts}
But... but.. if you sum up 1000007396's digits you will get 26.
Therefore, the digital root is 8.
If you take the digital root of p(1000007396) you will also get 8....
Forum: Proth Prime Search 2022-08-01, 16:08
Replies: 16
Views: 3,004
Posted By Batalov
19061965*2^1840922+1 is prime :rolleyes:

19061965*2^1840922+1 is prime :rolleyes:
Forum: NFS@Home 2022-07-31, 17:36
Replies: 105
Views: 6,641
Posted By Batalov
2,1416+ is done

2,1416+ cofactor =
p110 factor: 32312139386459660237589835506395782331854721499061954474461527504052156188529138203172395312834444925463648513
p132 factor:...
Forum: Software 2022-07-30, 18:20
Replies: 663
Views: 57,697
Posted By Batalov
Because such FFT doesn't exist. FFT are...

Because such FFT doesn't exist.
FFT are implemented for a certain list of sizes. In vicinity of "122" there are: 120, 128, 144 and so on.

Longer answer: "still why not 122?"
Because FFT is an...
Forum: Lounge 2022-07-27, 23:15
Replies: 13
Views: 300
Posted By Batalov
=

=
Forum: Chess 2022-07-26, 17:53
Replies: 5
Views: 354
Posted By Batalov
bAdqazixuRY

bAdqazixuRY
Forum: Lounge 2022-07-25, 21:12
Replies: 1,973
RIP
Views: 236,680
Posted By Batalov
Paul Sorvino...

Paul Sorvino (https://www.bbc.com/news/world-us-canada-62296883), actor
Forum: Linux 2022-07-25, 10:07
Replies: 21
Views: 554
Posted By Batalov
echo `wc -l a` `wc -l b` |awk '{print $1*100/$3...

echo `wc -l a` `wc -l b` |awk '{print $1*100/$3 "%"}'
Forum: Chess 2022-07-23, 21:43
Replies: 4
Views: 163
Posted By Batalov
Exclamation GM Magnus Carlsen's abdication

https://www.chess.com/news/view/carlsens-abdication-reactions-from-the-chess-world
______________
* just in case, unrelated note:
the last name Nepomniachtchi (Непо́мнящий) is a nice inside joke;...
Forum: And now for something completely different 2022-07-21, 11:51
Replies: 49
Views: 10,655
Posted By Batalov
Cool p(19439060)...

p(19439060) (http://factordb.com/index.php?id=1100000003809020989) and p(19439060)+4 (http://factordb.com/index.php?id=1100000003809021930) are cousin primes.

Work in progress: A355956 = 3, 5, 6,...
Forum: Miscellaneous Math 2022-07-20, 22:46
Replies: 27
Views: 1,215
Posted By Batalov
Lightbulb Re: 32 bits, and later 64 bit limit, and then higher.

Every road begins with a few first steps.

Just to give you, perhaps, a sandwich for the road (because this road is long), there are certain elements that can be used for 1) prototyping, 2)...
Forum: Miscellaneous Math 2022-07-19, 06:18
Replies: 27
Views: 1,215
Posted By Batalov
How about this, straight from Wikipedia (with...

How about this, straight from Wikipedia (with pseudocode changed into python):

def is_pow_onemod_fromWiki(P,D):
# return true if 2^Mp = 1 (mod D)
x=2
y=1
while (P > 1):
...
Forum: Miscellaneous Math 2022-07-18, 10:06
Replies: 27
Views: 1,215
Posted By Batalov
There is nothing that needs explaining. You are...

There is nothing that needs explaining. You are implementing exponentiation by millions of multiplications.

Instead, this method (https://en.wikipedia.org/wiki/Exponentiation_by_squaring) exists...
Forum: NFS@Home 2022-07-17, 20:32
Replies: 105
Views: 6,641
Posted By Batalov
In LA now. (Good dataset, 30M matrix.) ETA ~2...

In LA now. (Good dataset, 30M matrix.) ETA ~2 weeks.
Forum: Lounge 2022-07-17, 00:47
Replies: 296
Views: 45,676
Posted By Batalov
Just use license plate 0C2H5OH :rolleyes:

Just use license plate 0C2H5OH :rolleyes:
Forum: Miscellaneous Math 2022-07-16, 23:06
Replies: 27
Views: 1,215
Posted By Batalov
Exactly! 5 steps is enough, if done properly.

Exactly! 5 steps is enough, if done properly.
Forum: Miscellaneous Math 2022-07-16, 22:42
Replies: 27
Views: 1,215
Posted By Batalov
You are computing Mod(1/2,D)^7 and compare to...

You are computing Mod(1/2,D)^7 and compare to 2^4. (where 4 is simply a red herring value. You can change it to 3, to 7, to anything.)

That's the same as as computing Mod(1/2,D)^P by dividing by...
Forum: Languages -- Ancient & Modern, Human & Machine 2022-07-15, 21:44
Replies: 3
Views: 447
Posted By Batalov
Will we also learn to play go? Neat! EDIT: I...

Will we also learn to play go? Neat!

EDIT: I would be very interested. I can tell those who haven't experienced it - it is very useful if you travel to Japan. While at a conference you can...
Forum: sweety439 2022-07-15, 16:58
Replies: 13
Views: 534
Posted By Batalov
What part of "E.g....

What part of "E.g. (https://dictionary.cambridge.org/us/dictionary/english/eg)" was too difficult to understand?
Forum: And now for something completely different 2022-07-15, 05:07
Replies: 49
Views: 10,655
Posted By Batalov
Wrote a sieve and ran some range and found a few...

Wrote a sieve and ran some range and found a few large sequence elements (e.g. p(2335166)); will run for some more.
And credit where credit is due: look at the state of p(2335166) in FactorDb, eh?...
Showing results 1 to 25 of 1000

 
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