I don't believe this one will work if n=75, the number is divisible by 75, and and the end of the number isn't 75.
Compute a dot product of two vectors x and y
Is it an Armstrong number?
Make a vector of prime numbers
Area of an Isoceles Triangle
Lights Out 6 - 5x5, 13 moves
Rule of mixtures (composites) - lower and upper bounds
Lights Out 2 - 5x5, 4 moves
Divisible by n, prime divisors (including powers)
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