Problem 52990. Easy Sequences 46: Semi-prime Leap Year Pairs
60.0% Correct | 40.0% Incorrect
Last Solution submitted on Mar 19, 2023
GeeTwo on 7 Jan 2023
I scored it medium because even though it took way more time than it should have, I didn't do any literature searches.
OBTW, the drop from my first to second solution was due to borrowing @Tim 's semiprime generator, which I shall likely also use on ES 47, Boxes with Prime Edges.
Problem Recent Solvers2
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