User Pedja

66 votes

3 answers

6k views

Chebyshev polynomials of the first kind and primality testing

asked Nov 17, 2017 at 13:49

14 votes

4 answers

1k views

Six points on an ellipse

asked Jan 2, 2021 at 6:24

12 votes

2 answers

969 views

Intersection point of three circles

asked Dec 31, 2020 at 7:04

12 votes

2 answers

664 views

A conjectural infinite series for $\frac{\pi^2}{5\sqrt{5}}$

asked Sep 2, 2021 at 4:29

11 votes

2 answers

911 views

Primality test for specific class of Proth numbers

asked Aug 5, 2018 at 16:54

10 votes

0 answers

633 views

Primality testing using Chebyshev polynomials

asked Aug 28, 2020 at 3:39

9 votes

1 answer

419 views

Conjectured primality test for specific class of $N=4kp^n+1$

asked Feb 1, 2020 at 3:59

9 votes

1 answer

692 views

An infinite series involving harmonic numbers

asked Aug 24, 2021 at 4:06

8 votes

3 answers

1k views

An infinite series that converges to $\frac{\sqrt{3}\pi}{24}$

asked Aug 2, 2021 at 3:43

8 votes

4 answers

2k views

Three circles intersecting at one point

asked Apr 24, 2021 at 4:05

7 votes

1 answer

462 views

Primality test for $N=2^a3^b+1$

asked Jul 31, 2020 at 12:18

7 votes

2 answers

458 views

An infinite series involving the mod-parity of Euler's totient function

asked Aug 28, 2021 at 5:30

6 votes

1 answer

373 views

The square root of natural number expressed by an infinite series

asked Jun 18, 2021 at 3:47

6 votes

1 answer

197 views

Primality test for $N=4p+1$

asked Aug 14, 2020 at 6:48

6 votes

4 answers

584 views

Necessary and sufficient condition for quadrilateral to be cyclic

asked Apr 26, 2021 at 4:36

6 votes

1 answer

224 views

Necessary and sufficient condition for tangential polygon to be cyclic

asked Mar 13, 2021 at 10:17

5 votes

1 answer

333 views

Conjectured primality test for specific class of $N=k \cdot 6^n+1$

asked May 23, 2020 at 7:15

5 votes

0 answers

586 views

Primality test for specific class of generalized Fermat numbers

asked Jul 1, 2014 at 9:57

5 votes

1 answer

414 views

Primality test for $2p+1$

asked Feb 24, 2017 at 7:52

4 votes

1 answer

828 views

Primality test similar to the AKS test

asked Dec 2, 2017 at 14:21

4 votes

1 answer

110 views

Primality test for specific class of natural numbers using factors of Lucas polynomials

asked Aug 15, 2020 at 9:09

4 votes

1 answer

321 views

Primality test for $N=2^mp^n +1$

asked Aug 2, 2020 at 8:52

4 votes

1 answer

183 views

Primality test for specific class of $N=8k \cdot 3^n-1$

asked Jun 4, 2020 at 3:50

4 votes

1 answer

320 views

Collinearity in bicentric polygons

asked Mar 19, 2021 at 5:12

4 votes

0 answers

268 views

Four infinite series involving Riemann zeta function

asked Aug 11, 2021 at 5:38

4 votes

2 answers

211 views

Six conelliptic points

asked May 28, 2021 at 3:59

4 votes

1 answer

591 views

The constant $e$ represented by an infinite series

asked Jun 15, 2021 at 7:00

4 votes

1 answer

2k views

The constant $\pi$ expressed by an infinite series

asked Jun 16, 2021 at 3:59

4 votes

1 answer

215 views

Point of concurrency [closed]

asked Mar 10, 2021 at 5:28

4 votes

1 answer

441 views

Two conjectural infinite series for $\pi$

asked Sep 16, 2021 at 8:37

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57 Questions

Chebyshev polynomials of the first kind and primality testing

Six points on an ellipse

Intersection point of three circles

A conjectural infinite series for $\frac{\pi^2}{5\sqrt{5}}$

Primality test for specific class of Proth numbers

Primality testing using Chebyshev polynomials

Conjectured primality test for specific class of $N=4kp^n+1$

An infinite series involving harmonic numbers

An infinite series that converges to $\frac{\sqrt{3}\pi}{24}$

Three circles intersecting at one point

Primality test for $N=2^a3^b+1$

An infinite series involving the mod-parity of Euler's totient function

The square root of natural number expressed by an infinite series

Primality test for $N=4p+1$

Necessary and sufficient condition for quadrilateral to be cyclic

Necessary and sufficient condition for tangential polygon to be cyclic

Conjectured primality test for specific class of $N=k \cdot 6^n+1$

Primality test for specific class of generalized Fermat numbers

Primality test for $2p+1$

Primality test similar to the AKS test

Primality test for specific class of natural numbers using factors of Lucas polynomials

Primality test for $N=2^mp^n +1$

Primality test for specific class of $N=8k \cdot 3^n-1$

Collinearity in bicentric polygons

Four infinite series involving Riemann zeta function

Six conelliptic points

The constant $e$ represented by an infinite series

The constant $\pi$ expressed by an infinite series

Point of concurrency [closed]

Two conjectural infinite series for $\pi$