# Tag Info

Accepted

### Prime Number Snake

First, we want to take a look at the snake itself. Then, let's take a look at the grid, and see if there are some obvious features. So, let's fill those in: Then, because the snake has more white ...
Accepted

### Prime tree game

The answer is PROBABLY I don't have a proof yet, but experimenting with it will yield something like My strategy is Now my reasoning is that One idea to rigorously prove it is to use some result ...
Accepted

### A King's Hamiltonian Tours

Solution for the $5$x$5$ grid Other solutions for the same grid are For the $6$x$6$ grid I noted that This leads to this conclusion for the $6$x$6$ grid
Accepted

### Prime to number conversion

It might be more fun to fill the whole table. I've started with a few examples: \require{begingroup}\begingroup \def\*{\times } \begin{array}{|c|c|c|c|c|} \hline n& 2,3,5 & 2,3,7 ...
Accepted

### Scrabble with prime numbers!

EDIT2: My solution was already accepted, but (I assumed) far from optimal. I finally made myself a prime checking algorithm and checked the 32 numbers that allow maximum scoring for the main 'word'. ...

### Prime to Prime: Get all first 25 Prime Numbers using up to 4 Primes

83 is probably not allowed - I swear I'll find a legitimate solution soon... arrgh... Using 2,3,5,7: $2, 3, 5, 7 = 2, 3, 5, 7$ $11 = 7 + 5 + 2 - 3$ $13 = 7 + 5 + 3 - 2$ $17 = 7 \cdot 2 + 3$ \$19 = 7 \...

### Dividing the first 20 numbers into 3 lists

Incorrect answer Oops! The "solution" below is wrong in the following way: Unfortunately it's 3:25am local time and I don't have time to attempt a proper fix. My apologies; hopefully someone else ...

### Find an integer where each sum of 5 consecutive digits is prime

Improving upon Gareth's answer (the details of which I will not repeat) with consideration of ThomasL's suggestion, a solution with 12 primes is found: Two solutions with 11 primes were also found:
Accepted

Accepted

### Two equal-sized lists that produce prime sums

Computer search solution. A quick and dirty Python script then identifies... Here is the script: ...