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Project Euler Solutions

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By admin ⋅ July 4, 2009 ⋅ Post a comment

Finding square sums that are palindromic.

By Mike ⋅ June 16, 2009 ⋅ One comment

Investigating which primes will never divide a repunit containing 10**n digits.

By Mike ⋅ June 15, 2009 ⋅ 4 comments

Determining the first forty prime factors of a very large repunit.

By Mike ⋅ June 15, 2009 ⋅ Post a comment

Finding composite values, n, for which n−1 is divisible by the length of the smallest repunits that divide it.

By Mike ⋅ June 15, 2009 ⋅ One comment

Investigating minimal repunits that divide by n.

By Mike ⋅ June 12, 2009 ⋅ Post a comment

How many numbers below a googol (10**100) are not “bouncy”?

By Mike ⋅ June 11, 2009 ⋅ Post a comment

Investigating the density of “bouncy” numbers.

By Mike ⋅ June 10, 2009 ⋅ Post a comment

What is the maximum 16-digit string for a “magic” 5-gon ring?

By Mike ⋅ June 10, 2009 ⋅ One comment

By analysing a user’s login attempts, can you determine the secret numeric passcode?

By Mike ⋅ June 8, 2009 ⋅ One comment

Find the number of different lengths of wire can that can form a right angle triangle in only one way.