Neighbour primes: Difference between revisions
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Found 20 neighbour primes
done...
</pre>
=={{header|Rust}}==
<syntaxhighlight lang="rust">
fn main() {
let mut primes_first : Vec<u64> = Vec::new( ) ;
primal::Primes::all( ).take_while( | n | *n < 500 ).for_each( | num |
primes_first.push( num as u64 ) ) ;
let mut current : u64 = *primes_first.iter( ).last( ).unwrap( ) + 1 ;
while ! primal::is_prime( current ) {
current += 1 ;
}
primes_first.push( current ) ;
let len = primes_first.len( ) ;
let mut primes_searched : Vec<u64> = Vec::new( ) ;
for i in 0..len - 2 {
if primal::is_prime( primes_first[ i ] * primes_first[ i + 1 ] + 2 ) {
let num = primes_first[ i ] ;
primes_searched.push( num ) ;
}
}
println!("{:?}" , primes_searched ) ;
}</syntaxhighlight>
{{out}}
<pre>
[3, 5, 7, 13, 19, 67, 149, 179, 229, 239, 241, 269, 277, 307, 313, 397, 401, 419, 439, 487]
</pre>
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