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@dogbert17
Created September 23, 2017 21:34
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callgrinded script
use v6;
my int $max = 200_000;
# find all primes up to $max using The Sieve of Erathostenes
my int @a = (0..$max);
for (2..($max div 2)) -> int $i {
my int $j = 2;
@a[$i * $j++] = 1 while $i * $j <= $max;
}
# remove discarded numbers and store the rest in a set for ease of lookup
my @primes = @a.grep(-> int $num {$num > 1});
say @primes.sum;
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