# Number Theory Forum

Number Theory Help Forum

1. ### d>=0 is the GCD of a1,...,ar if d|ai (1<= i <= r) and t|ai (1<= i <= r) => t|d

• Replies: 5
• Views: 506
Aug 31st 2011, 12:21 AM
2. ### by direct method

• Replies: 13
• Views: 1,054
Aug 29th 2011, 10:45 PM
3. ### factorization by finding modular square roots

• Replies: 1
• Views: 682
Aug 25th 2011, 10:45 AM
4. ### Prove that this equation is solvable

• Replies: 1
• Views: 644
Aug 24th 2011, 01:04 AM
5. ### Show that there exist no positive integers ...

• Replies: 2
• Views: 697
Aug 23rd 2011, 04:49 PM
6. ### Analytic continuation of zeta function

• Replies: 2
• Views: 1,279
Aug 22nd 2011, 10:02 PM
7. ### Ten consecutive positive integers

• Replies: 1
• Views: 597
Aug 22nd 2011, 01:55 PM
8. ### how to calculate EulerPhi( a+bI)

• Replies: 6
• Views: 654
Aug 22nd 2011, 01:18 AM
9. ### profit & loss

• Replies: 1
• Views: 901
Aug 20th 2011, 01:38 PM
10. ### Binomial coefficient

• Replies: 1
• Views: 1,076
Aug 20th 2011, 01:35 PM
11. ### Tricky Tut Question

• Replies: 4
• Views: 578
Aug 19th 2011, 11:42 PM
12. ### Factorial Problem

• Replies: 9
• Views: 533
Aug 19th 2011, 05:49 AM
13. ### Number of positive divisors of n

• Replies: 7
• Views: 658
Aug 17th 2011, 11:04 AM

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15. ### Divisible by 9

• Replies: 11
• Views: 2,313
Aug 17th 2011, 02:48 AM
16. ### number of strings not containing xyz

• Replies: 4
• Views: 875
Aug 16th 2011, 05:00 PM
17. ### [SOLVED] Compute the remainder: Fermat's Little Theorem

• Replies: 4
• Views: 2,022
Aug 16th 2011, 12:40 PM
18. ### divisibility of numbers

• Replies: 2
• Views: 512
Aug 15th 2011, 10:29 PM
19. ### What is the difference between R and -infinity to +infinity?

• Replies: 1
• Views: 750
Aug 14th 2011, 08:03 AM
20. ### Prove the following (how to tell if a number is divisible by 3)

• Replies: 6
• Views: 640
Aug 14th 2011, 03:55 AM
21. ### Prove using induction (2)

• Replies: 1
• Views: 466
Aug 13th 2011, 05:12 PM
22. ### Prove using induction

• Replies: 4
• Views: 525
Aug 13th 2011, 09:07 AM
23. ### Prove divisibility test for 11 using induction

• Replies: 0
• Views: 822
Aug 13th 2011, 03:48 AM
24. ### Prove divisibility test for 3 using induction

• Replies: 3
• Views: 782
Aug 12th 2011, 11:03 AM
25. ### Finding missing letters using repeated squaring

• Replies: 0
• Views: 373
Aug 12th 2011, 08:29 AM
26. ### series

• Replies: 3
• Views: 404
Aug 12th 2011, 07:21 AM
27. ### Use induction

• Replies: 2
• Views: 348
Aug 11th 2011, 03:56 AM
28. ### Exponential cipher

• Replies: 4
• Views: 1,216
Aug 10th 2011, 11:42 AM

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