Project Euler Solutions

By Mike Molony ⋅ April 9, 2009 ⋅ 11 comments

Find the sum of all the positive integers which cannot be written as the sum of two abundant numbers.

What is the millionth lexicographic permutation of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9?

By Mike Molony ⋅ April 10, 2009 ⋅ One comment

Find the first term in the Fibonacci sequence to contain 1000 digits.

By Mike Molony ⋅ April 30, 2009 ⋅ 6 comments

Find the value of d < 1000 for which 1/d contains the longest recurring cycle.

Find a quadratic formula that produces the maximum number of primes for consecutive values of n.

By Mike Molony ⋅ May 2, 2009 ⋅ One comment

Find the sum of both diagonals in a square spiral.

By Mike Molony ⋅ April 7, 2009 ⋅ 2 comments

Find the distinct terms in the sequence generated by a**b for 2 ≤ a ≤ 100 and 2 ≤ b ≤ 100?

By Mike Molony ⋅ March 30, 2009 ⋅ 7 comments

Find the sum of all the numbers that can be written as the sum of fifth powers of their digits.

By Mike Molony ⋅ March 31, 2009 ⋅ 7 comments

Investigating combinations of English currency denominations.

By Mike Molony ⋅ April 22, 2009 ⋅ 7 comments

Find the sum of all 1-9 pandigital numbers that is composed of two factors and their product.

Dreamshire