進行13次甲=, 9, 8, 7, 6, 93 97最小公倍數, 8942, 9021, 4758, 4581, wavelength long to short 1=red 2=yellow 3=blue 4=green, 1243, 3421, 1234, 4321, 1423, 3241, 100057是質數, yes, no, 選一個質數, 100000, 100003, 100002, 100005, 100004, 100006.

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