mersenneforum.org 3^10000+2 is composite
 User Name Remember Me? Password
 Register FAQ Search Today's Posts Mark Forums Read

2013-08-26, 09:29   #12
LaurV
Romulan Interpreter

"name field"
Jun 2011
Thailand

280516 Posts

Quote:
 Originally Posted by danaj This is akin to saying all numbers are worth factoring.
Are they not?

2013-08-27, 02:37   #13
ewmayer
2ω=0

Sep 2002
República de California

2DEA16 Posts

Quote:
 Originally Posted by LaurV Are they not?
Well, some folks like to restrict themselves to only the integers. And some of those only care about the naturals, viewing integers <= 0 as "unnatural" [Note that w.r.to the great schism over whether 0 is natural, we rightly consider those who say 'yes' as heretics]. And a really extreme sect called the "oddballs" only care about factoring odd naturals > 2. Bloody wackos, those.

Last fiddled with by ewmayer on 2013-08-27 at 02:39

 2013-08-27, 02:49 #14 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 3×3,329 Posts Some numbers are not worth factoring. They are best left alone. 7 is not worth factoring. First of all, it is a scary movie. Secondly, on the seventh day one should rest. And lastly, because seven ate nine.
2013-08-27, 04:17   #15
LaurV
Romulan Interpreter

"name field"
Jun 2011
Thailand

3·5·683 Posts

Quote:
 Originally Posted by ewmayer Well, some folks like to restrict themselves to only the integers.
Hahaha! 10 points! you made my day! I didn't imagine one will try to factor $\pi$ or $\phi$, but well, you are right!

2013-08-28, 22:50   #16
henryzz
Just call me Henry

"David"
Sep 2007
Liverpool (GMT/BST)

6,011 Posts

Quote:
 Originally Posted by LaurV Hahaha! 10 points! you made my day! I didn't imagine one will try to factor $\pi$ or $\phi$, but well, you are right!
It wouldn't surprise me if they would. It wouldn't surprise me if some of the transcendental constants that we know now are could be split into multiple constants that would be very rarely used. We are far from knowing everything about these things. There is plenty hidden still yet to discover.

2014-12-20, 00:20   #17
davar55

May 2004
New York City

5×7×112 Posts

Quote:
 Originally Posted by danaj Done, thanks for the reminder. It looks like yafu isn't acting nicely when getting very large inputs. The bit about yafu was more a side issue. I'm not entirely sure what the OP had in mind, but I think it was either (a) news that this number is composite, for all those who have been holding their breath for the answer; or (b) starting a conversation about primality testing of large numbers with custom software. (a) is silly, (b) is interesting IMO.
Was yafu fixed after being transfixed by the OP number?

 2015-01-12, 21:14 #18 davar55     May 2004 New York City 5·7·112 Posts Can someone confirm that the "feature" of yafu w.r.t 3^10000+2 was fixed? (Never mind, I understand it has been.) Last fiddled with by davar55 on 2015-01-12 at 21:15
 2015-05-31, 12:18 #19 davar55     May 2004 New York City 5×7×112 Posts Quick question before I try my calculator on it: is 5^30000-2 prime, prp, or does it have a small factor(s) ?
 2015-05-31, 16:02 #20 firejuggler     "Vincent" Apr 2010 Over the rainbow 19×151 Posts factordb say composite without know factor edit worked a bit on it, it has a factor, 52092974911 Last fiddled with by firejuggler on 2015-05-31 at 16:09

 Similar Threads Thread Thread Starter Forum Replies Last Post mdettweiler No Prime Left Behind 19 2011-02-17 21:13 mdettweiler No Prime Left Behind 44 2010-11-28 10:59 mdettweiler No Prime Left Behind 61 2010-10-29 18:48 10metreh Factoring 24 2009-04-06 07:52 ixfd64 Factoring 1 2006-01-02 08:25

All times are UTC. The time now is 18:24.

Tue Nov 29 18:24:52 UTC 2022 up 103 days, 15:53, 0 users, load averages: 0.87, 0.94, 0.98

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