# Number Theory Forum

Number Theory Help Forum

1. ### Show that rational numbers correspond to decimals

• Replies: 3
• Views: 1,322
Feb 11th 2011, 05:50 AM
2. ### Problem dealing with Euclidean Algorithm/gcd

• Replies: 1
• Views: 502
Feb 10th 2011, 08:56 PM
3. ### Divisibility of 0

• Replies: 3
• Views: 406
Feb 10th 2011, 04:29 AM
4. ### Multiplicative Identity Proof

• Replies: 1
• Views: 630
Feb 9th 2011, 03:30 PM
5. ### When is 2 a quadratic residue?

• Replies: 8
• Views: 2,715
Feb 8th 2011, 06:49 PM
6. ### Automorphic Numbers

• Replies: 0
• Views: 628
Feb 8th 2011, 01:41 PM
7. ### Find complete set of integer solutions

• Replies: 4
• Views: 919
Feb 7th 2011, 10:08 PM
8. ### Any good number theory sites?

• Replies: 2
• Views: 534
Feb 7th 2011, 08:33 AM
9. ### Euclid's Lemma Proof by Induction

• Replies: 2
• Views: 1,766
Feb 7th 2011, 02:25 AM
10. ### 3digit numbers that are multiples of 7 with individual digits that add to 7.

• Replies: 4
• Views: 541
Feb 6th 2011, 06:49 PM
11. ### number theory

• Replies: 1
• Views: 420
Feb 6th 2011, 06:39 PM
12. ### The Division Algorithm 2

• Replies: 2
• Views: 493
Feb 5th 2011, 01:18 PM
13. ### Prove prime p divides infinitely many members of 1, 11, 111, 1111...

• Replies: 2
• Views: 3,249
Feb 5th 2011, 07:43 AM
14. ### Euler Function Proof

• Replies: 3
• Views: 903
Feb 5th 2011, 01:04 AM
15. ### Computing square roots modulo prime powers

• Replies: 0
• Views: 467
Feb 3rd 2011, 08:50 PM
16. ### The Division Algorithm

• Replies: 3
• Views: 497
Feb 3rd 2011, 05:52 PM
17. ### evaluating pi and e from integer series like golden ratio

• Replies: 2
• Views: 656
Feb 3rd 2011, 01:40 PM
18. ### modulo question

• Replies: 1
• Views: 302
Feb 3rd 2011, 01:11 PM
19. ### modulo question

• Replies: 4
• Views: 577
Feb 3rd 2011, 01:04 PM
20. ### proof that if a square is even then the root is too.

• Replies: 7
• Views: 1,221
Feb 3rd 2011, 12:55 PM
21. ### How many positive integers divide 3^3*5^5*7^7

• Replies: 1
• Views: 858
Feb 3rd 2011, 07:13 AM
22. ### Give a combinatorial proof

• Replies: 3
• Views: 673
Feb 3rd 2011, 03:41 AM
23. ### Hensel's Lemma

• Replies: 0
• Views: 608
Feb 2nd 2011, 04:28 PM
24. ### Polynomial ring

• Replies: 3
• Views: 530
Feb 2nd 2011, 02:30 PM
25. ### Z is not a field.

• Replies: 3
• Views: 3,123
Feb 2nd 2011, 11:25 AM
26. ### Group Theory - Prove that for ab-cd=1, there is no cancellation for (a+c)/(b+d)

• Replies: 1
• Views: 645
Feb 2nd 2011, 09:29 AM
27. ### Prove a large number is prime

• Replies: 9
• Views: 941
Feb 1st 2011, 11:17 PM
28. ### [SOLVED] number theory: proof required!

• Replies: 2
• Views: 495
Feb 1st 2011, 03:42 PM
29. ### Reducing number of divisions!

• Replies: 3
• Views: 840
Jan 31st 2011, 12:05 PM
30. ### Is this easily solvable without a computer?

• Replies: 3
• Views: 440
Jan 30th 2011, 09:21 PM

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