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Search: Posts Made By: Batalov
Forum: Riesel Prime Search 2021-09-21, 01:30
Replies: 269
Views: 46,886
Posted By Batalov
Thumbs up Good! Excellent! Even Kamada-san wrote to him...

Good! Excellent!
Even Kamada-san wrote to him and cc:'d me (as if I could help :rolleyes: ).

But it is fixed now, cool beans.
Forum: Lounge 2021-09-21, 01:27
Replies: 1,699
Views: 134,534
Posted By Batalov
knptjRo83Ec La Palma volcano eruption continues...

knptjRo83Ec
La Palma volcano eruption continues on Canary Island | LIVE
1,397 watching now
Started streaming 5 hours ago



@xilman - I hope the wind blows the other way for you?
Forum: Aliquot Sequences 2021-09-21, 01:08
Replies: 3,111
Views: 248,306
Posted By Batalov
That's the famous cusp (of convergence)

That's the famous cusp (of convergence)
Forum: Wagstaff PRP Search 2021-09-20, 19:33
Replies: 5
Views: 5,218
Posted By Batalov
Use (a-b)(a+b) = a2 - b2 and Bob's your uncle.

Use (a-b)(a+b) = a2 - b2
and Bob's your uncle.
Forum: And now for something completely different 2021-09-17, 17:49
Replies: 5
Views: 150
Posted By Batalov
...but 10^(n)-epsilon has n digits And of...

...but 10^(n)-epsilon has n digits

And of course, the only palindrome prime that has an even number of digits (in any base, actually) is "11"! (And even "11" can be composite; then none.)
All...
Forum: NFS@Home 2021-09-16, 16:33
Replies: 33
Views: 3,673
Posted By Batalov
8p3_930M is done

Thu Sep 16 01:02:09 2021
p88 factor: 8140818645611617140423189084010180374627188803000899172278298237756498599357784319269741
p100 factor:...
Forum: Riesel Prime Search 2021-09-15, 21:52
Replies: 269
Views: 46,886
Posted By Batalov
Cool When I was already way into sieving, I thought...

When I was already way into sieving, I thought that I should have picked 1234321 decimal digits length :rolleyes:

But it turned out good. With 1234567 digits' dataset the hit came, statistically...
Forum: Riesel Prime Search 2021-09-15, 16:06
Replies: 269
Views: 46,886
Posted By Batalov
Prof.Caldwell's calculator had insufficient...

Prof.Caldwell's calculator had insufficient precision. I'll drop him a note. It is, of course, 1234567.

All palindromes of even length (except 11) are composite! :rolleyes:
Hint: they are...
Forum: No Prime Left Behind 2021-09-15, 00:06
Replies: 1,515
Views: 210,263
Posted By Batalov
That was lucky! In a couple days it wouldn't...

That was lucky!
In a couple days it wouldn't have fit. Now it will stay there forever
:beer2:
Forum: Riesel Prime Search 2021-09-14, 20:08
Replies: 269
Views: 46,886
Posted By Batalov
Another Riesel "other" number is coming soon. ...

Another Riesel "other" number is coming soon.

It is a palindrome, chock full of "9"s (with a few others) and is neatly 1,234,567 decimal digits long
Forum: Lounge 2021-09-14, 19:58
Replies: 1,779
RIP
Views: 179,592
Posted By Batalov
Norman Macdonald, a Canadian stand-up comedian...

Norman Macdonald, a Canadian stand-up comedian (https://en.wikipedia.org/wiki/Norm_Macdonald)
Forum: NFS@Home 2021-09-14, 05:58
Replies: 33
Views: 3,673
Posted By Batalov
Plus Fib(1409) is done Mon Sep 13 21:49:33 2021 ...

Fib(1409) is done

Mon Sep 13 21:49:33 2021
p64 factor: 1645314853783969974409864778570205738354678434910357950092999577
p161 cofactor: 1263615066...54657241

edS1VXSa
Forum: NFS@Home 2021-09-12, 23:58
Replies: 45
Views: 8,055
Posted By Batalov
8p3_930M is in LA; small; just a 2-days worth...

8p3_930M is in LA; small; just a 2-days worth job. Can be moved to 'Post processing'.
Fib 1409 will finish first (ETA tomorrow)
Forum: Languages -- Ancient & Modern, Human & Machine 2021-09-12, 23:38
Replies: 53
Views: 21,341
Posted By Batalov
There is a great guy who does Lingua Latina...

There is a great guy who does Lingua Latina channel and recently he had two excellent experiments:
DYYpTfx1ey8 fDhEzP0b-Wo
Forum: PrimeNet 2021-09-12, 05:23
Replies: 35
Views: 1,736
Posted By Batalov
:direction:

:direction:
Forum: Riesel Prime Search 2021-09-11, 10:44
Replies: 269
Views: 46,886
Posted By Batalov
Cool Two largest known less-than-Mega primes,...

Two largest known less-than-Mega primes, actually.
(The second one was found before search was called off, an incidental finding. :rolleyes: )

...
10^999999+308267*10^292000+1 P 1000000 ...
Forum: Aliquot Sequences 2021-09-10, 05:59
Replies: 3,576
Views: 361,273
Posted By Batalov
Take 2525664

Take 2525664
Forum: Aliquot Sequences 2021-09-09, 07:40
Replies: 3,576
Views: 361,273
Posted By Batalov
Take 1730616

Take 1730616
Forum: Puzzles 2021-09-06, 18:07
Replies: 58
Views: 1,511
Posted By Batalov
The final touch is using solve(x=A,B,f(x)) ...

The final touch is using solve(x=A,B,f(x))
Bracket the root [A,B], set the wanted precision \p 50 and it will solve it.
Forum: NFS@Home 2021-09-05, 21:12
Replies: 33
Views: 3,673
Posted By Batalov
I can finish 8p3_930M octic

I can finish 8p3_930M octic
Forum: NFS@Home 2021-09-05, 20:12
Replies: 45
Views: 8,055
Posted By Batalov
Arrow Fibonacci(1409) is in LA, so we don't need to...

Fibonacci(1409) is in LA, so we don't need to wait for 4000+ straggler rejects due to the race of lemmings...
Can be moved to 'Post processing'
Forum: Puzzles 2021-09-05, 01:10
Replies: 58
Views: 1,511
Posted By Batalov
/gasp/ ...you couldn't just solve it...

/gasp/ ...you couldn't just solve it analytically?

In Russian there is a saying, "To shoot sparrows with a cannon". That's what's going on here.
Forum: NFS@Home 2021-09-03, 06:33
Replies: 1,849
Views: 155,712
Posted By Batalov
We could do some more Fibs and Lucas's, maybe?...

We could do some more Fibs and Lucas's, maybe? Their polynomials are frequently easily reused from their lesser siblings without any retraining.
E.g. L1373 c272.
Forum: Puzzles 2021-09-01, 00:48
Replies: 58
Views: 1,511
Posted By Batalov
Lightbulb It seems that the visitors of this thread, after...

It seems that the visitors of this thread, after this trivial warmup, are now ripe to admire the real beauty.
Behold! -- The couch problem (https://en.wikipedia.org/wiki/Moving_sofa_problem)
...
Forum: Miscellaneous Math 2021-08-28, 20:55
Replies: 21
Views: 881
Posted By Batalov
Lightbulb I can only add another illustrative vignette - ...

I can only add another illustrative vignette -

Interestingly (c), 21278-1 is fully factored (http://factordb.com/index.php?query=2%5E1278-1). But how can that be without the help of factoring...
Showing results 1 to 25 of 1000

 
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