Michael Molony's Python Blog

By Mike Molony ⋅ April 11, 2009 ⋅ 2 comments

Counting primes that lie on the diagonals of the spiral grid.

By Mike Molony ⋅ May 28, 2009 ⋅ One comment

Using a brute force attack, decrypt the cipher using XOR encryption

By Mike Molony ⋅ June 3, 2009 ⋅ 7 comments

Find a set of five primes for which any two primes concatenate to produce another prime.

By Mike Molony ⋅ January 16, 2011 ⋅ 5 comments

Find the sum of the only set of six 4-digit figurate numbers with a cyclic property.

By Mike Molony ⋅ April 3, 2009 ⋅ Post a comment

Find the smallest cube for which exactly five permutations of its digits are cube.

By Mike Molony ⋅ March 30, 2009 ⋅ Post a comment

Count how many n-digit positive integers exist which are also an nth power.

By Mike Molony ⋅ January 23, 2011 ⋅ Post a comment

Find the continued fractions for N ≤ 10000 have an odd period.

By Mike Molony ⋅ April 10, 2009 ⋅ Post a comment

Find the sum of digits in the numerator of the 100th convergent of the continued fraction for e.

By Mike Molony ⋅ January 22, 2011 ⋅ 6 comments

Investigate the Diophantine equation x² − Dy² = 1.

By Mike Molony ⋅ April 9, 2009 ⋅ Post a comment

Find the maximum total from top to bottom in a large triangle of numbers using an efficient algorithm.

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