Search the web
Sign In
New User? Sign Up
primenumbers · Prime numbers and primality testing
  • Members Only
  • Post
  • Files
  • Photos
  • Database
  • Polls
  • Promote
  • Groups Labs (Beta)

Group Information

  • Members: 1177
  • Category: Number Theory
  • Founded: Dec 27, 2000
  • Language: English
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Hear how Yahoo! Groups has changed the lives of others. Take me there.

Best of Y! Groups

   Check them out and nominate your group.
Visit the Groups blog for the latest Yahoo! Groups information

Home

  

Activity within 7 days:

33 New Messages - New Questions

Description

PrimeNumbers is a e-mail discussion list for those who enjoy prime numbers.  Some look for patterns, some seek to find new records, others try to understand the distribution.  We try to limit our discussion to prime numbers, primality testing, and very closely related subjects.

If you enjoy prime numbers there are similar lists you might enjoy, such as PrimeForm focusing on primality proving programs and GIMPS' Mersenne Primes list. 

If you think you have a Goldbach proof -- there are groups which deal specifically with such matters, perhaps try those first?

[ The Prime Pages : FAQ | Glossary | Links | Top 5000 | CrackPots ]

  • Avoid sending the same mail to multiple lists! (because it spams those who are on all of them).
  • Follow links at you (on left) at your own risk! They have been provided by the members.  We check them periodically but...
  • Also download files (on left) at your own risk.  Is your virus checker up to date? 
  • Please report any malicious or non-prime related files/links/... to the moderators.

Most Recent Messages

  (View All)
(Group by Topic)
Search:
Advanced
    Start Topic
Re: Complex a*x^n+b*y^n puzzle
Found by pari-gp script, in a couple of hours' running time:- n_max=10 a=3+6*I, b=7-5*I, x=-2+I, y=-3+I n=1 u=-28 + 13*I uu=953 n=2 u=59 - 76*I uu=9257 n=3
Posted - Sat Nov 28, 2009 9:10 pm
 mikeoakes2
Offline Offline
Send Email Send Email
Re: Complex a*x^n+b*y^n puzzle
... I like that one, with x and y having the same norm, as is perfectly legitimate. Over to Jens, using C, in C? David
Posted - Sat Nov 28, 2009 2:49 pm
 djbroadhurst
Offline Offline
Send Email Send Email
Re: Complex a*x^n+b*y^n puzzle
... ? for(n=1,100,if(ispseudoprime(221,1),print(n))) 75 88 ? for(n=1,100,if(ispseudoprime(221,1),print(n))) 67 100 ?
Posted - Sat Nov 28, 2009 2:37 pm
 djbroadhurst
Offline Offline
Send Email Send Email
Re: Complex a*x^n+b*y^n puzzle
... Strengthening the code to say ispseudoprime(uu,0), here's a proper solution for n_max=9:- a=4 + I, b=4, x=2 + I, y=-2 + I n=1 u=-1 + 10*I uu=101 n=2 u=20 +
Posted - Sat Nov 28, 2009 2:33 pm
 mikeoakes2
Offline Offline
Send Email Send Email
Re: Complex a*x^n+b*y^n puzzle
... That horse fell at the first fence: a*x + b*y = 14 + 5*I = (3 + 2*I)*(4 - I) is not a Gaussian prime. David
Posted - Sat Nov 28, 2009 2:28 pm
 djbroadhurst
Offline Offline
Send Email Send Email
Add primenumbers to your personalized My Yahoo! page Add to My Yahoo! XML What's This?

Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 60 35 100 223 152 175 178 119 152 118 68
2008 43 66 29 13 58 73 45 38 71 46 62 46
2007 109 141 70 46 84 42 35 27 29 19 25 36
2006 155 82 190 96 110 74 65 103 36 20 70 56
2005 165 130 210 180 196 112 89 66 60 59 145 209
2004 197 121 93 93 117 133 120 72 88 172 151 183
2003 616 414 354 343 271 217 316 300 235 242 193 207
2002 381 622 579 440 805 345 276 429 489 556 530 509
2001 257 205 265 272 204 382 430 435 588 645 537 403
2000 15
What is Yahoo! Answers?

Yahoo! Answers, a new Yahoo! community, is a question and answer exchange where the world gathers to share what they know...and make each other's day. People can ask questions on any topic, and help others out by answering their questions.

Hide this tip
What is Yahoo! Answers?

Yahoo! Answers, a new Yahoo! community, is a question and answer exchange where the world gathers to share what they know...and make each other's day. People can ask questions on any topic, and help others out by answering their questions.

Hide this tip

Questions in Science & Mathematics > Mathematics

  • Questions are currently unavailable.

Want to help answer other questions? Go to Yahoo! Answers

Group Email Addresses

Related Link: http://www.primepages.org/
Post message: primenumbers@yahoogroups.com
Subscribe: primenumbers-subscribe@yahoogroups.com
Unsubscribe: primenumbers-unsubscribe@yahoogroups.com
List owner: primenumbers-owner@yahoogroups.com
Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help