All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers
Prime square (Posted on 2005-07-19) Difficulty: 3 of 5
Can you fill a 4x4 square so each row and each column forms a prime number? And a 5x5 square?

Note: in both cases, there should be no duplicate rows or duplicate columns. Also, numbers cannot start with a 0. Finally, all digits from 0 to 9 should be used at least once.

No Solution Yet Submitted by Federico Kereki    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
Sorry, FK, I have no time, but ... | Comment 3 of 8 |

how about this contribution ? a 10 x 10 array !!

5322818971
6827241919
5993645263
5559929113
3977461949
2227498523
5388417583
3649692979
6589485989
9339391933

I found it, and it was produced by computer. There´s also a 33 x33 array !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


  Posted by pcbouhid on 2005-07-19 16:13:45
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (7)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information