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Search took 0.50 seconds. Search: Posts Made By: xilman
Forum: XYYXF Project 2022-06-28, 17:48
Replies: 518
Views: 124,294
Posted By xilman
That is why I drew them to people's attention....

That is why I drew them to people's attention. Simple representation, few clearly usable algebraic properties, observed high(-ish) density of (pseudo-)primes and a wide range of sizes.
Forum: Soap Box 2022-06-24, 21:27
Replies: 150
Views: 12,068
Posted By xilman
It's your country, you fix it. (Apologies to...

It's your country, you fix it.

(Apologies to readers who are not US citizens.)
Forum: Homework Help 2022-06-23, 20:58
Replies: 4
Views: 224
Posted By xilman
Hint: use the long division algorithm you (should...

Hint: use the long division algorithm you (should have) learned at school and pay attention to the remainders.
Forum: Math 2022-06-22, 20:57
Replies: 25
Views: 1,071
Posted By xilman
That is one thing I really like about this place...

That is one thing I really like about this place - I often learn something new and unexpected.

I had never heard of "Yardley's poker book" but own a 1st-edition copy of The American Black Chamber....
Forum: Lounge 2022-06-22, 20:50
Replies: 31
Views: 1,583
Posted By xilman
Never got on with the Rama series, nor the...

Never got on with the Rama series, nor the Foundation and Dune series.

Asimov's original trilogy was basically a rehash of Gibbon's Decline and Fall.

Perhaps I should give them another chance.
Forum: Lounge 2022-06-22, 20:46
Replies: 31
Views: 1,583
Posted By xilman
I really disliked the first TBP book and have no...

I really disliked the first TBP book and have no incentive to read the others. Very very silly, IMAO, and requires far too much suspension of belief.

Supposedly describing Alpha Centauri, which...
Forum: Lounge 2022-06-22, 20:37
Replies: 31
Views: 1,583
Posted By xilman
Part of my problem is that I am getting ever more...

Part of my problem is that I am getting ever more certain that they are trying to drive me sane.
Forum: Miscellaneous Math 2022-06-22, 15:30
Replies: 572
Views: 71,543
Posted By xilman
Aw, you spoiled it for the audience. ...

Aw, you spoiled it for the audience.

:popcorn:
Forum: Math 2022-06-22, 14:32
Replies: 25
Views: 1,071
Posted By xilman
Here is how I include a library into many of my...

Here is how I include a library into many of my number theory programs.

use bigint lib=>'GMP';


And here is how I test for primality of fairly small numbers (up to 1200 digits say)

#...
Forum: Miscellaneous Math 2022-06-22, 14:17
Replies: 572
Views: 71,543
Posted By xilman
Three porblems I suffer from with my tping is...

Three porblems I suffer from with my tping is tranposition of two charactters, unwnated doubling of a key and ommission of a singel key.
Forum: Math 2022-06-20, 08:48
Replies: 25
Views: 1,071
Posted By xilman
Why, in your professional opinion, do you think...

Why, in your professional opinion, do you think the Poincaré conjecture is only "sort of" solved?
Forum: Math 2022-06-19, 19:03
Replies: 25
Views: 1,071
Posted By xilman
Beal's (Conjecture Prize)

Someone who wishes to remain anonymous has brought this to my attention, hence my careful parenthesization ot this post's title.
Forum: Soap Box 2022-06-19, 09:03
Replies: 37
Views: 1,146
Posted By xilman
I interpreted it as an attempt at humour and...

I interpreted it as an attempt at humour and didn't find it in the least offensive.
Forum: Soap Box 2022-06-17, 17:50
Replies: 37
Views: 1,146
Posted By xilman
You, Sir, are a miserable failure. In this...

You, Sir, are a miserable failure. In this instance at least.
Forum: Soap Box 2022-06-17, 17:08
Replies: 37
Views: 1,146
Posted By xilman
Even if I accept your premise for the sake of...

Even if I accept your premise for the sake of argument, there is a profound difference in meaning between "makes" and "keeps".
Forum: Soap Box 2022-06-17, 16:26
Replies: 37
Views: 1,146
Posted By xilman
s/stupid/careless/

s/stupid/careless/
Forum: FactorDB 2022-06-15, 19:17
Replies: 561
Views: 105,416
Posted By xilman
Unless your From: header was itself an invalid...

Unless your From: header was itself an invalid address.

A technique quite often used by spammers.
Forum: Lounge 2022-06-14, 15:19
Replies: 261
Views: 55,919
Posted By xilman
Lady Beryl Streeb-Greebling—a 'wonderful dancer'...

Lady Beryl Streeb-Greebling—a 'wonderful dancer' who was still dancing at 107 years of age, and who was capable of breaking a swan's wing with a blow of her nose.
Forum: Soap Box 2022-06-12, 18:25
Replies: 37
Views: 1,146
Posted By xilman
My approach is very rarely to watch TV,

My approach is very rarely to watch TV,
Forum: Soap Box 2022-06-12, 16:11
Replies: 37
Views: 1,146
Posted By xilman
Have you come across the neologism "wamb"? ...

Have you come across the neologism "wamb"?

If not, a search engine will find it for you and provide you with an exercise in sorting out the gem from the dross.
Forum: storm5510 2022-06-12, 16:07
Replies: 29
Views: 651
Posted By xilman
Much the same variation in tax rates (though not...

Much the same variation in tax rates (though not the absolute values) occurs in Europe. AFAIK, the Canaries are the European equivalent of Alaska. The UK is towards the high end but is not the...
Forum: Cunningham Tables 2022-06-12, 16:00
Replies: 26
Views: 10,732
Posted By xilman
Nice work! Interesting the second stage took...

Nice work!

Interesting the second stage took so much less time than the first. To me that suggests you could raise B2 substantially unless it takes too much memory. Theoretical optimum is to spend...
Forum: storm5510 2022-06-11, 19:11
Replies: 29
Views: 651
Posted By xilman
You assume incorrectly. ...

You assume incorrectly.


pcl@thoth:~/nums/minimal$ units
Currency exchange rates from FloatRates (USD base) on 2020-11-15
3679 units, 109 prefixes, 114 nonlinear units

You have: brgallon...
Forum: storm5510 2022-06-11, 19:02
Replies: 29
Views: 651
Posted By xilman
See https://www.bbc.co.uk/news/uk-61770710 and...

See https://www.bbc.co.uk/news/uk-61770710 and https://www.bbc.co.uk/news/business-61731161

In the latter, average UK prices for petrol on 2022-06-09 was 180.73p per litre and for diesel it was...
Forum: sweety439 2022-06-11, 15:09
Replies: 351
Views: 45,033
Posted By xilman
Exactly. The first one I fixed. My code...

Exactly. The first one I fixed.

My code reads


if(mpz_probab_prime_p(temp, 25) > 0 && mpz_cmp_si(temp, base) > 0) /* PCL */


Note mpz_cmp_si --- base is declared int, not unsigned.
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