RosettaCodeData/Task/Ultra-useful-primes/FreeBASIC/ultra-useful-primes.basic
2023-07-01 13:44:08 -04:00

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Text

#include "isprime.bas"
Dim As Longint n, k, limit = 10
Dim As ulongint num
For n = 1 To limit
k = -1
Do
k += 2
num = (2 ^ (2 ^ n)) - k
If isPrime(num) Then
Print "n = "; n; " k = "; k
Exit Do
End If
Loop
Next
Sleep