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# Summation of primes

Slow, but only using compiler built-ins (about 5 seconds)

```perl
say sum (^2e6).grep: {.&is-prime};
```

#### Output:

```
142913828922
```

Much faster using external libraries (well under half a second)

```perl
use Math::Primesieve;
my $sieve = Math::Primesieve.new;
say sum $sieve.primes(2e6.Int);
```

Same output