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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Semiprime/Common-Lisp/semiprime.lisp Normal file
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(defun semiprimep (n &optional (a 2))
(cond ((> a (isqrt n)) nil)
((zerop (rem n a)) (and (primep a) (primep (/ n a))))
(t (semiprimep n (+ a 1)))))
(defun primep (n &optional (a 2))
(cond ((> a (isqrt n)) t)
((zerop (rem n a)) nil)
(t (primep n (+ a 1)))))