User Dmitry Kamenetsky

22 votes

0 answers

595 views

Smallest $m>1$ such that the number of Collatz steps needed for $238!+m$ to reach $1$ differs from that for $238!+1$.

asked Aug 12, 2021 at 8:41

14 votes

1 answer

686 views

Solutions to $A^N+B^N=C^N \pm 1,\,$ for $N \geq 4$?

asked Feb 8, 2021 at 1:04

10 votes

1 answer

277 views

Smallest number of $45^\circ-60^\circ-75^\circ$ triangles that tile a rectangle

asked Mar 2, 2021 at 0:51

8 votes

1 answer

389 views

Dividing a polygon into 6 equal regions

asked Nov 21, 2019 at 8:07

7 votes

1 answer

147 views

Knife inside the square [closed]

asked Apr 8, 2020 at 12:04

7 votes

0 answers

231 views

Prime generating modular function

asked Dec 17, 2020 at 10:17

4 votes

1 answer

110 views

Tiling a square with 3:1 rectangles

asked Jan 8, 2022 at 11:02

4 votes

1 answer

216 views

Near misses to the start of a potential loop in the Collatz sequence

asked Oct 13, 2022 at 8:18

2 votes

0 answers

47 views

A grid where every combination of two colours appears exactly once

asked Jul 24, 2020 at 6:16

2 votes

1 answer

1k views

Shortest distance from a point to the paraboloid

asked May 4, 2020 at 7:49

2 votes

0 answers

61 views

Non-trivial solutions to $w^n = x^n + y^n + z^n$, for $n>4$ [closed]

asked Apr 8, 2020 at 8:03

2 votes

2 answers

602 views

Largest prime that remains prime when any one of its digits is deleted

asked Feb 25, 2021 at 2:17

2 votes

0 answers

563 views

Relaxation of the $\pi^{\pi^{\pi^{\pi}}}$ problem

asked Mar 1, 2021 at 2:05

1 vote

0 answers

64 views

Process where you add an unused factor

asked Oct 17, 2021 at 2:32

1 vote

1 answer

123 views

Freeing the trapped knight

asked Mar 10, 2021 at 6:01

1 vote

3 answers

179 views

Most number of consecutive odd primes in a Collatz sequence

asked Jun 26, 2020 at 11:04

1 vote

0 answers

45 views

Orchard planting problem for circles

asked Oct 5, 2020 at 6:23

1 vote

0 answers

49 views

Maximal cliques bounding number of edges [duplicate]

asked Jan 9, 2021 at 22:57

1 vote

3 answers

152 views

Hailstone numbers producing a specific number of rises and falls

asked Oct 12, 2022 at 7:36

0 votes

1 answer

106 views

Three touching spheres in d dimensions

asked Apr 19, 2021 at 12:02

0 votes

0 answers

52 views

Best non-lattice configurations for the Kissing number problem

asked May 6, 2021 at 2:28

Stack Exchange Network

21 Questions

Smallest $m>1$ such that the number of Collatz steps needed for $238!+m$ to reach $1$ differs from that for $238!+1$.

Solutions to $A^N+B^N=C^N \pm 1,\,$ for $N \geq 4$?

Smallest number of $45^\circ-60^\circ-75^\circ$ triangles that tile a rectangle

Dividing a polygon into 6 equal regions

Knife inside the square [closed]

Prime generating modular function

Tiling a square with 3:1 rectangles

Near misses to the start of a potential loop in the Collatz sequence

A grid where every combination of two colours appears exactly once

Shortest distance from a point to the paraboloid

Non-trivial solutions to $w^n = x^n + y^n + z^n$, for $n>4$ [closed]

Largest prime that remains prime when any one of its digits is deleted

Relaxation of the $\pi^{\pi^{\pi^{\pi}}}$ problem

Process where you add an unused factor

Freeing the trapped knight

Most number of consecutive odd primes in a Collatz sequence

Orchard planting problem for circles

Maximal cliques bounding number of edges [duplicate]

Hailstone numbers producing a specific number of rises and falls

Three touching spheres in d dimensions

Best non-lattice configurations for the Kissing number problem