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# Forum: Number Theory

Classical Number Theory, Algebraic and Analytic Number Theory, Number Theoretic Cryptography

2. ### How can we show that one of these congruences hold?

• Replies: 4
• Views: 432
February 7th, 2020, 08:11
3. ### Solving problem with a middle number between 2 numbers

• Replies: 0
• Views: 420
January 21st, 2020, 11:37
4. ### Euler/Riemann Point of Departure in Riemann's 1859 paper containing RH

• Replies: 1
• Views: 433
December 26th, 2019, 06:22
5. ### Digit sum rule for the divisibility by 9

• Replies: 2
• Views: 276
December 15th, 2019, 19:16
6. ### Number Theory Image

• Replies: 1
• Views: 199
December 14th, 2019, 11:18
7. ### Proof of the Division Algorithm

• Replies: 3
• Views: 2,239
July 16th, 2019, 07:53
8. ### Why certain topics in elementary number theory?

• Replies: 2
• Views: 1,096
July 13th, 2019, 00:02
9. ### Greatest common divisor

• Replies: 1
• Views: 400
July 8th, 2019, 17:13
10. ### Which Pythagorean triples were known by the Sumerians?

• Replies: 1
• Views: 552
June 26th, 2019, 11:36
11. ### What to include in an introduction?

• Replies: 2
• Views: 579
June 22nd, 2019, 01:50
12. ### Greatest Common Divisor of two specified sequences of numbers (search for equality)

• Replies: 0
• Views: 592
May 14th, 2019, 09:44
13. ### Amount of possible public keys in RSA Cryptosystems

• Replies: 0
• Views: 575
May 1st, 2019, 11:03
14. ### What should I say about elementary number theory?

• Replies: 3
• Views: 642
April 26th, 2019, 10:14
15. ### Show that a^(2n)≡1 (mod 2^(n+2))

• Replies: 9
• Views: 3,193
March 27th, 2019, 02:25
16. ### Resources of questions

• Replies: 2
• Views: 672
March 16th, 2019, 08:31
17. ### How do I convert from this mod number to a regular number?

• Replies: 4
• Views: 905
February 25th, 2019, 18:09
18. ### Hill cipher attack

• Replies: 2
• Views: 692
February 23rd, 2019, 10:50
19. ### [SOLVED] Integer Modules Problem

• Replies: 7
• Views: 1,026
January 27th, 2019, 21:10
20. ### Elementary Number Theory proof

• Replies: 1
• Views: 603
January 26th, 2019, 04:25
21. ### K-th convergents of continued fraction

• Replies: 6
• Views: 1,100
January 21st, 2019, 14:32
22. ### Calculus of measures

• Replies: 12
• Views: 1,508
January 21st, 2019, 13:58
23. ### How do we use the hint?

• Replies: 1
• Views: 835
November 7th, 2018, 14:52
24. ### Elliptic Curve Cryptography

• Replies: 2
• Views: 655
November 6th, 2018, 00:33
25. ### [SOLVED] Show that 5 does not divide L_n

• Replies: 8
• Views: 892
November 5th, 2018, 16:44
26. ### Show congruence with Lucas sequence

• Replies: 7
• Views: 891
November 5th, 2018, 08:15
27. ### System of congruences, not relatively prime moduli

• Replies: 2
• Views: 1,065
October 16th, 2018, 04:38
28. ### gcd

• Replies: 1
• Views: 749
September 13th, 2018, 09:12
29. ### Using Nested Logs with differing bases to contract a number

• Replies: 0
• Views: 612
September 13th, 2018, 05:11

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