All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info
Home > Numbers
Problems dealing with numbers, digits, and such other purely abstract rubbish.
Sub-Categories (All Problem Categories)
> Sequences
Difficulty: 4 of 5 Latest: Just a search
List all prime numbers below 3000 that can be expressed
as a^2 + n*b^2 for all integer n's from 1 to 10.
(No Solution Yet, 5 Comments) Submitted on 2018-08-18 by Ady TZIDON   
Page 2 of 108   << prev next >>    
Difficulty: 3 of 5Odd-abundant numbers. |
Posted on 2018-07-21 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Truncatable primes |
Posted on 2018-07-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5From eleven to ... ETERNITY |
Posted on 2018-07-14 by Ady TZIDON (Solution Posted, 3 Comments)
Difficulty: 3 of 5Counting sudokus |
Posted on 2018-07-13 by Ady TZIDON (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Aloof prime |
Posted on 2018-07-12 by Ady TZIDON (Solution Posted, 2 Comments)
Difficulty: 3 of 5Sum of 4 squares |
Posted on 2018-07-08 by Ady TZIDON (Solution Posted, 4 Comments)
Difficulty: 3 of 55 ways of factorizing | Rating: 3.00
Posted on 2018-07-07 by Ady TZIDON (Solution Posted, 3 Comments)
Difficulty: 3 of 5Magic square of cubes |
Posted on 2018-07-05 by Ady TZIDON (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Some prime sequences |
Posted on 2018-07-04 by Ady TZIDON (No Solution Yet, 11 Comments)
Difficulty: 2 of 5Who's on the second base? |
Posted on 2018-07-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Cubes as factorials' sum |
Posted on 2018-06-23 by Ady TZIDON (Solution Posted, 1 Comments)
Difficulty: 3 of 53 cubes |
Posted on 2018-06-21 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Square Divisiblity | Rating: 3.00
Posted on 2018-06-17 by Daniel (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Zero is the last digit of S | Rating: 5.00
Posted on 2018-06-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Cubes of couples |
Posted on 2018-06-12 by Ady TZIDON (No Solution Yet, 2 Comments)
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 (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information