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Re:Prime After Prime (2016) by Vvector on Monday June 08, 2020 @01:44PM (#23458782)
It just eliminates the multiples of 2 and 3

6x ± 0: divisible by 2,3

6x ± 1: not divisible by 2,3

6x ± 2: divisible by 2

6x ± 3: divisible by 3

6x ± 4: divisible by 2

6x ± 5: modulus equivalent to 6x ± 1

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