Larger prime sieve

#1

in the end of this video it is shwoing prime if number is ending with 18 how?

#2

Can’t understand , please give a detailed query.

#3

in the video at 6:14 2147483618 the answer shoudl be not prime but it is showing prime in the vide

#4

the answer hasn’t been calculated in the video, the yes you are seeing is of previous computation where value of n is 2147483647

#5

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