mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 244
Search took 0.03 seconds.
Search: Posts Made By: fatphil
Forum: Puzzles 2022-02-24, 09:35
Replies: 13
Views: 1,862
Posted By fatphil
I think I was standing on my head, and completely...

I think I was standing on my head, and completely misunderstood you. Despite what you saying being both clear and correct. The error is entirely mine, apologies.
Forum: Puzzles 2022-02-24, 00:29
Replies: 13
Views: 1,862
Posted By fatphil
You have completely failed to understand the...

You have completely failed to understand the problem.
Forum: Puzzles 2022-02-24, 00:28
Replies: 13
Views: 1,862
Posted By fatphil
How does that make any sense at all??!?!

How does that make any sense at all??!?!
Forum: Puzzles 2022-02-22, 22:58
Replies: 13
Views: 1,862
Posted By fatphil
Yup, so the cards are simpler than a full...

Yup, so the cards are simpler than a full "permutation". I'd describe the final arrangement of cards as simply +2, +3, +4, +0, +1.

Note that he ends clean, so there aren't (necessarily) that many...
Forum: Puzzles 2022-02-21, 23:28
Replies: 14
Views: 1,305
Posted By fatphil
No time to compose a post, as it's past bedtime....

No time to compose a post, as it's past bedtime. However, I've just scribbled this into a 'speed.txt' file...

"""
Old code of unknown vintage. Code did get 2.5x quicker almost immediately
after...
Forum: Puzzles 2022-02-21, 23:21
Replies: 13
Views: 1,862
Posted By fatphil
Penn & Teller Fool Us, S08 E09

Andi Gladwin's maze cards, the third trick, which fooled P&T.

It's almost entirely pure mathematics. I'll try and keep the "spoilers" minimal, and thus perhaps the confusion high.

I haven't...
Forum: Puzzles 2022-02-20, 21:01
Replies: 14
Views: 1,305
Posted By fatphil
We did the n^2-1, n^2, n^2+1 test ourselves and...

We did the n^2-1, n^2, n^2+1 test ourselves and confirmed that finding. I was unable to imagine where any other corner cases might hide.
Forum: Puzzles 2022-02-20, 20:31
Replies: 14
Views: 1,305
Posted By fatphil
Should I stop my test, or should I let it just...

Should I stop my test, or should I let it just complete so that everything it misses can be known? Am I right in thinking that all results are delivered in mod M order? The last thing printed was...
Forum: Puzzles 2022-02-20, 14:21
Replies: 14
Views: 1,305
Posted By fatphil
Sounds excellent! I've just started it on a known...

Sounds excellent! I've just started it on a known range that I ran with either my mark-I or mark-II code to check that the results are the same. Alas the chunks I was testing were multi-day on...
Forum: Puzzles 2022-02-19, 21:35
Replies: 14
Views: 1,305
Posted By fatphil
Yeah, that's close enough to the problem the...

Yeah, that's close enough to the problem the olympiad video was about, which was made me realise this puzzle was just part of a family in the first place.
Forum: Puzzles 2022-02-19, 21:25
Replies: 14
Views: 1,305
Posted By fatphil
Yup, that's what I've been running with most of...

Yup, that's what I've been running with most of the time:


// the square greater or equal to a^2+b^2, and its root
uint64_t rt_ge_a2b2 = a + 1;
...
Forum: Puzzles 2022-02-17, 21:58
Replies: 14
Views: 1,305
Posted By fatphil
Simultaneously Square Sums of Mostly Squares

Late last year I came up with this puzzle, but brute force and ignorance are now beginning to stall when it comes to finding solutions, so I thought perhaps you guys would like a stab:

Find...
Forum: Lounge 2022-02-17, 20:43
Replies: 118
Views: 8,017
Posted By fatphil
rain rapid antigens invade Nevada anti

rain

rapid antigens invade Nevada

anti
Forum: Factoring 2010-06-23, 08:14
Replies: 1,860
Views: 212,058
Posted By fatphil
I notice it's been 96 hours since the last...

I notice it's been 96 hours since the last connect, so I presume
everyone is off now. If that stays the case, I'll stick this machine in
my pocket when I head over to Tallinn tomorrow evening.
...
Forum: Factoring 2010-05-23, 21:14
Replies: 1,860
Views: 212,058
Posted By fatphil
In that case, I will need to perform the...

In that case, I will need to perform the migration onto my PicoITX. It looks like the ecmserver binary runs happily (though I've not seen it do any GMP maths yet, the VIA might not like the...
Forum: Factoring 2010-05-23, 12:41
Replies: 1,860
Views: 212,058
Posted By fatphil
If the clients are going to need to be...

If the clients are going to need to be reconfigured anyway, then they can connect to another port instead. 8194 is simply tradition.
Forum: Factoring 2010-05-23, 12:39
Replies: 1,860
Views: 212,058
Posted By fatphil
Greetings all. Sorry for any inconvenience this...

Greetings all. Sorry for any inconvenience this has caused.

I've got a replacement machine that literally fits in my pocket that can take over the role at a moment's notice, and which I can keep...
Forum: Factoring 2008-12-03, 18:48
Replies: 1,860
Views: 212,058
Posted By fatphil
Which bit's not in evidence? The Gauss sums are...

Which bit's not in evidence? The Gauss sums are from Sun et al. However, they might be completely unnecessary, depending on how the other lead you provide.

It seems as if you final sentence is...
Forum: Factoring 2008-12-01, 23:46
Replies: 1,860
Views: 212,058
Posted By fatphil
Are you familiar with the concept of who...

Are you familiar with the concept of who paragraphs keep related sentences together, and by extension, multiple paragraphs can be used to keep less-related sentences separate from each other?

If...
Forum: Factoring 2008-12-01, 19:27
Replies: 1,860
Views: 212,058
Posted By fatphil
Weird, I get an Aurefeuillian factorisation for...

Weird, I get an Aurefeuillian factorisation for 99 too:

? factor(hf(11,9,9))

params=[11, 9, 11/9, 1/3, 11, -1, 198]

[[5750932177, 1; 104907806276834514493, 1],
[100981, 1; 251857, 1;...
Forum: Factoring 2008-12-01, 18:41
Replies: 1,860
Views: 212,058
Posted By fatphil
http://www.leyland.vispa.com/numth/factorization/a...

http://www.leyland.vispa.com/numth/factorization/anbn/11+9.txt
187 1871.210784524898267.75233596333117435159. C130

C130 = 260777275385646300545894010485844710967932854733 *...
Forum: Factoring 2008-12-01, 17:25
Replies: 1,860
Views: 212,058
Posted By fatphil
I'm not just curious, but actually perturbed that...

I'm not just curious, but actually perturbed that you've wasted time ECM-ing numbers which would have split trivially if you'd used Aurefeuillian factorisations. With the help of the wonderful...
Forum: Factoring 2008-11-28, 14:01
Replies: 1,860
Views: 212,058
Posted By fatphil
Question I'm curious why, unlike other cyclotomic...

I'm curious why, unlike other cyclotomic projects, you didn't take the vastly-easier aurefeuillian ones to twice the size? Unfortunately, I no longer have any record of the factorisations I performed...
Forum: Riesel Prime Search 2007-09-03, 11:33
Replies: 33
Views: 4,159
Posted By fatphil
Apologies, I've been away for a while. Alas I am...

Apologies, I've been away for a while. Alas I am unable to find any records of the range that I searched. I didn't do it on my machine, but on a machine I bought for a friend, and she's unable to...
Forum: Factoring 2007-02-21, 18:49
Replies: 1,860
Views: 212,058
Posted By fatphil
4+3 is going swimmingly - 14 numbers with n<450...

4+3 is going swimmingly - 14 numbers with n<450 factored entirely into primes already.

Does anyone have a list of which tables are complete, as it definitely makes sense for me to tackle those...
Showing results 1 to 25 of 244

 
All times are UTC. The time now is 05:02.


Thu Jun 30 05:02:47 UTC 2022 up 77 days, 3:04, 0 users, load averages: 1.39, 1.39, 1.40

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.

≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ ² ³ °
∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 𝖕 𝖖 𝖗 ⊲ ⊳
∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ ℕ ℤ ℚ ℝ ℂ ℵ ℶ ℷ ℸ 𝓟
¬ ∨ ∧ ⊕ → ← ⇒ ⇐ ⇔ ∀ ∃ ∄ ∴ ∵ ⊤ ⊥ ⊢ ⊨ ⫤ ⊣ … ⋯ ⋮ ⋰ ⋱
∫ ∬ ∭ ∮ ∯ ∰ ∇ ∆ δ ∂ ℱ ℒ ℓ
𝛢𝛼 𝛣𝛽 𝛤𝛾 𝛥𝛿 𝛦𝜀𝜖 𝛧𝜁 𝛨𝜂 𝛩𝜃𝜗 𝛪𝜄 𝛫𝜅 𝛬𝜆 𝛭𝜇 𝛮𝜈 𝛯𝜉 𝛰𝜊 𝛱𝜋 𝛲𝜌 𝛴𝜎𝜍 𝛵𝜏 𝛶𝜐 𝛷𝜙𝜑 𝛸𝜒 𝛹𝜓 𝛺𝜔