Find prime numbers of the form n*n*n+2: Difference between revisions

=={{header|Julia}}==

<lang julia># Formatting output as in Go example.

using Primes, Formatting

isncubedplus2prime(x) = begin fx = x * x * x + 2; (isprime(fx), fx) end

tostring(x, fx) = "n = " * lpad(x, 3) * " => n³ + 2 =" * lpad(format(fx, commas=true), 10)

function filterprintresults(x_to_bool_and_fx, start, stop, stringify=(x, fx)->"$x $fx", doprint=true)

ncount = 0

println("Filtering $x_to_bool_and_fx for integers between $start and $stop:\n")

for n in start+1:stop-1

isone, result = x_to_bool_and_fx(n)

if isone

doprint && println(stringify(n, result))

ncount += 1

end

end

println("\nThe total found was $ncount.")

end

filterprintresults(isncubedplus2prime, 0, 200, tostring)

</lang>{{out}}

<pre>

n = 1 => n³ + 2 = 3

n = 3 => n³ + 2 = 29

n = 5 => n³ + 2 = 127

n = 29 => n³ + 2 = 24,391

n = 45 => n³ + 2 = 91,127

n = 63 => n³ + 2 = 250,049

n = 65 => n³ + 2 = 274,627

n = 69 => n³ + 2 = 328,511

n = 71 => n³ + 2 = 357,913

n = 83 => n³ + 2 = 571,789

n = 105 => n³ + 2 = 1,157,627

n = 113 => n³ + 2 = 1,442,899

n = 123 => n³ + 2 = 1,860,869

n = 129 => n³ + 2 = 2,146,691

n = 143 => n³ + 2 = 2,924,209

n = 153 => n³ + 2 = 3,581,579

n = 171 => n³ + 2 = 5,000,213

n = 173 => n³ + 2 = 5,177,719

n = 189 => n³ + 2 = 6,751,271

The total found was 19.

</pre>