this is the commented version of my previous entry (solution 181910)
this is my original submission modified for ease of reading
whoops, didn't see your thing about "easy to understand code."
Project Euler: Problem 3, Largest prime factor
Getting logical indexes
Wheat on a chessboard pt 1
Return area of square
Project Euler: Problem 4, Palindromic numbers
Poker Series 09: IsHighCard
Poker Series 06: isThreeKind
String substitution, sub problem to cryptoMath
Project Euler: Problem 7, Nth prime
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