pre-calculated prime numbers

The prime numbers from 2 to 46340 are calculated and stored in array num.
Only x+1, x+7, x+11, x+13, x+17, x+19, x+23, and x+29 are stored in the array, where x is 30y and y is a positive number.
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1545*30 = 46350 ~ 46340.
1545*8  bits