Narcissistic number is a number that is the sum of its own digits each raised to the power of the number of digits.
153 = 1^3 + 5^3 + 3^3
101 ~= 1^3 + 0 ^3 + 1^3
Reverse Run-Length Encoder
Project Euler: Problem 3, Largest prime factor
Sophie Germain prime
Perfect Square or not
Put m balls into n boxes (again)
Project Euler: Problem 14 Longest Collatz sequence(harder version)
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Big Integer Sqrt
Find the right number make the equation
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