Prime String | Java program to find if string is a Prime or not . ; Function that checks if sum is prime or not ; Corner cases ; This is checked so that we can skip middle five numbers in below loop ; Driver code
import java . io . * ; class GFG { static boolean isPrimeString ( String str ) { int len = str . length ( ) , n = 0 ; for ( int i = 0 ; i < len ; i ++ ) n += ( int ) str . charAt ( i ) ; if ( n <= 1 ) return false ; if ( n <= 3 ) return true ; if ( n % 2 == 0 n % 3 == 0 ) return false ; for ( int i = 5 ; i * i <= n ; i = i + 6 ) if ( n % i == 0 || n % ( i + 2 ) == 0 ) return false ; return true ; } public static void main ( String [ ] args ) { String str = " geekRam " ; if ( isPrimeString ( str ) ) System . out . println ( " Yes " ) ; else System . out . println ( " No " ) ; } }