// archives

## Project Euler

This tag is associated with 142 posts

### Project Euler 128 Solution

Find the 2000th hexagonal tile in which the differences between it and its 6 neighbors yield 3 primes.

### Project Euler 94 Solution

Find the sum of the perimeters of all almost equilateral triangles with integral side lengths and area.

### Project Euler 123 Solution

Find the maximum remainder when (p − 1)n + (p + 1)n is divided by p2 for prime p.

### Project Euler 116 Solution

Count the number of ways a space 50 units long could be filled by tiles, homogeneously, measuring 2, 3 or 4 units long.

### Project Euler 115 Solution

Fill an empty row with blocks, a minimum length of 50 units, until the size of the row exceeds 1,000,000 units. The blocks must be separated by at least one empty space.

### Project Euler 114 Solution

Count the ways a row measuring fifty units in length could be filled with blocks three units long. The blocks must be separated by at least one empty space.

### Project Euler 117 Solution

Count the number of ways a space 50 units long could be filled by tiles, heterogeneously, measuring 2, 3 or 4 units long.

### Project Euler 139 Solution

Find how many Pythagorean triangles allow tiling with a perimeter < 100,000,000.

### Project Euler 231 Solution

The prime factorisation of binomial coefficients

### Project Euler 455 Solution

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