Number Theory Forum

Number Theory Help Forum

1. [SOLVED] Every prime > 3 is congruent to \pm 1 mod 6

• Replies: 7
• Views: 1,338
Jul 16th 2010, 07:50 AM
2. Finding the remainder

• Replies: 12
• Views: 869
Jul 16th 2010, 04:34 AM

• Replies: 0
• Views: 615
Jul 15th 2010, 08:29 AM
4. Golden Ratios (Q Fields)

• Replies: 10
• Views: 646
Jul 14th 2010, 07:46 AM
5. Help to prove 5^n+5 < 5^(n+1)

• Replies: 4
• Views: 599
Jul 14th 2010, 03:24 AM
6. Need Help with proof

• Replies: 1
• Views: 580
Jul 13th 2010, 02:50 PM
7. Another proof by induction.

• Replies: 5
• Views: 614
Jul 13th 2010, 02:37 PM
8. Maximum error in the Prime Number Theorem

• Replies: 2
• Views: 718
Jul 13th 2010, 09:31 AM
9. [SOLVED] Prove that every ne N can be written as a product of an odd integer and a power of 2.

• Replies: 1
• Views: 584
Jul 13th 2010, 08:54 AM
10. Help needed.

• Replies: 2
• Views: 616
Jul 13th 2010, 07:02 AM
11. Help with prime number and modulo

• Replies: 6
• Views: 694
Jul 13th 2010, 12:10 AM
12. Why this inequation?

• Replies: 3
• Views: 702
Jul 12th 2010, 10:55 PM
13. [SOLVED] Let p be odd. Then 2(p-3)!\equiv -1 (mod p)

• Replies: 5
• Views: 698
Jul 12th 2010, 04:42 PM
14. fibonacci series - a slight variant

• Replies: 5
• Views: 799
Jul 12th 2010, 03:59 AM
15. Divisibility of central binomial coefficient

• Replies: 18
• Views: 1,605
Jul 11th 2010, 09:43 PM
16. p=2^k+1 and (a/p)=-1 imply a is primitive modulo p

• Replies: 1
• Views: 563
Jul 11th 2010, 08:34 AM
17. let a be a solution of x^2\equiv 1 (mod m). Show that m-a is also a solution.

• Replies: 2
• Views: 823
Jul 10th 2010, 06:38 PM
18. [SOLVED] x^2\equiv 1 (mod p) and x^2\equiv 1 (mod q), where p and q are distinct primes

• Replies: 2
• Views: 890
Jul 10th 2010, 06:14 PM
19. Sequence

• Replies: 8
• Views: 631
Jul 9th 2010, 08:43 PM
20. Very tricky and interesting modular question

• Replies: 6
• Views: 851
Jul 9th 2010, 08:41 PM
21. Euler's Lucky number

• Replies: 19
• Views: 2,184
Jul 9th 2010, 11:41 AM
22. Magic Squares with Magic "Subsquares"

• Replies: 14
• Views: 1,528
Jul 9th 2010, 11:21 AM
23. Number of congruence classes

• Replies: 0
• Views: 556
Jul 9th 2010, 01:27 AM
24. [SOLVED] 2n^3+3n^2+n\equiv 0 (mod 6)

• Replies: 4
• Views: 666
Jul 9th 2010, 12:44 AM

• Replies: 2
• Views: 839
Jul 8th 2010, 01:17 AM
26. Summation of Euler's φ-Function

• Replies: 3
• Views: 782
Jul 8th 2010, 12:22 AM
27. Congruence classes

• Replies: 3
• Views: 553
Jul 8th 2010, 12:20 AM

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