# Number Theory Forum

Number Theory Help Forum

1. ### Find positive integers

• Replies: 7
• Views: 759
Apr 22nd 2009, 03:37 PM
2. ### Sum of reciprocals of Prime Numbers

• Replies: 5
• Views: 1,049
Apr 22nd 2009, 11:40 AM
3. ### Carmichael numbers

• Replies: 17
• Views: 1,847
Apr 21st 2009, 10:09 PM
4. ### Is F_2_[x] a finite field?

• Replies: 4
• Views: 645
Apr 21st 2009, 09:23 PM
5. ### proof of a congruence modulo prime powers

• Replies: 3
• Views: 654
Apr 21st 2009, 04:41 AM
6. ### [SOLVED] A Question about RSA

• Replies: 1
• Views: 394
Apr 21st 2009, 03:59 AM
7. ### 7|2^k+1

• Replies: 4
• Views: 616
Apr 21st 2009, 03:48 AM
8. ### Order modulo proof help

• Replies: 1
• Views: 430
Apr 21st 2009, 02:06 AM
9. ### Limit of Constant Sequence

• Replies: 1
• Views: 1,279
Apr 21st 2009, 12:34 AM
10. ### Proof by mathematical Induction

• Replies: 2
• Views: 494
Apr 20th 2009, 08:33 AM
11. ### find the number of ways

• Replies: 3
• Views: 532
Apr 19th 2009, 10:19 PM
12. ### [SOLVED] Problem involving Fermat's Little Theorem

• Replies: 1
• Views: 865
Apr 19th 2009, 01:58 PM
13. ### legendre symbol proof

• Replies: 6
• Views: 1,045
Apr 18th 2009, 11:13 PM
14. ### [SOLVED] Two questions about Euler

• Replies: 2
• Views: 548
Apr 18th 2009, 06:47 PM
15. ### help with proof involving gcd and lcm and rational numbers

• Replies: 0
• Views: 556
Apr 17th 2009, 12:36 PM

• Replies: 0
• Views: 543
Apr 17th 2009, 09:50 AM
17. ### Last two digits...

• Replies: 7
• Views: 684
Apr 16th 2009, 08:57 PM
18. ### Divisiblility

• Replies: 1
• Views: 549
Apr 16th 2009, 11:20 AM
19. ### Is there a list of almost-primes?

• Replies: 0
• Views: 396
Apr 16th 2009, 11:16 AM
20. ### Find general expression for even numbers:

• Replies: 1
• Views: 483
Apr 16th 2009, 09:00 AM
21. ### something new?holds?why?is it possible to prove?

• Replies: 7
• Views: 608
Apr 16th 2009, 02:51 AM
22. ### The first problem I ever became obsessed with...

• Replies: 1
• Views: 544
Apr 15th 2009, 07:33 PM
23. ### Integer factorization

• Replies: 5
• Views: 462
Apr 15th 2009, 03:27 PM
24. ### need help on quadratic reciprocity

• Replies: 1
• Views: 802
Apr 15th 2009, 02:01 PM
25. ### Congruence

• Replies: 1
• Views: 412
Apr 15th 2009, 01:12 PM
26. ### sum of 4 squares

• Replies: 1
• Views: 602
Apr 15th 2009, 10:26 AM
27. ### Prove a congruence implication

• Replies: 1
• Views: 485
Apr 15th 2009, 03:21 AM
28. ### Find all primes p such that $$\frac{10}{p}$$=1.

• Replies: 2
• Views: 1,723
Apr 14th 2009, 10:54 PM
29. ### Infintely many primes of the form:

• Replies: 2
• Views: 584
Apr 14th 2009, 04:54 PM
30. ### proofs using the axioms of rings

• Replies: 2
• Views: 885
Apr 13th 2009, 10:18 PM

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