Created
September 23, 2017 21:34
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callgrinded script
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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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