Pandigitals with prime-divisible substrings

Walkthrough of Project Euler problem #43

Multiple permutations

Walkthrough of Project Euler problem #32

Circular primes

Walkthrough of Project Euler problem #35

Fractions of a decimal fraction

Walkthrough of Project Euler problem #40

Yet another naive BigInteger solution

Walkthrough of Project Euler problem #29

Factorials of digits

Walkthrough of Project Euler problem #34

Powers of digits

Walkthrough of Project Euler problem #30

Bases and palindromes

Walkthrough of Project Euler problem #36

Spiral square diagonals

Walkthrough of Project Euler problem #28

The last digits of large numbers

Walkthrough of Project Euler problem #48

Repeating decimals

Walkthrough of Project Euler problem #26

BigInteger laziness

Walkthrough of Project Euler problem #25