A number is HAPPY where summing the squares of each digit, and doing the same continually for each result, eventually resolves to 1 (e.g., 129 = 1^2 + 2^2 + 9^2 = 86; 6^2 + 8^2 = 100; 1^2 + 0^2 + 0^2 = 1).
A number is PRIME where its only factors are 1 and itself.
Classic: Type in answers that appear in a list
Forced Order: Answers have to be entered in order
Wrong Answers: Some wrong answers will appear in red
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