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A comment on Prime Number Spiral. Parent comment

Re:Prime Number Spiral by pwdisswordfish on Monday January 02, 2017 @09:09AM (#13301193)
n² - 1 = (n - 1)(n + 1)
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Re:Prime Number Spiral by banku_brougham on Tuesday January 03, 2017 @12:40PM (#13311004)
precisely. maybe its a trivial example, but if no mathematician had discovered the factorization of n^2 - 1, this visualization device would have been a helpful clue.
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