Core Function IsPrime
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IsPrime( <expression> )
Contents |
Description
Check is a given number is a valid Prime number.
Parameters
expression
A number to check.
Return Value
Success: Returns true.
Failure: Returns false.
Remarks
If your variable is an INT type the prime check will use Int64.
If your variable is a Float type the prime check will be as a Double.
Example
Prime the first 1000 primes
my $PrimeCount = 0; for(my $i = 0; $i < 7920; $i++) { my $Number = (double)$i; $IsPrime = IsPrime($Number); if($IsPrime) { println("'$Number' is prime" ); $PrimeCount++; } } say "Found '$PrimeCount' prime number(s)";
Check if a list of numbers are primes
my $Primes = qw( 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 101 103 107 109 113 127 131 137 139 149 151 157 163 167 173 179 181 191 193 197 199 211 223 227 229 233 239 241 251 257 263 269 271 277 281 283 293 307 311 313 317 331 337 347 349 ); while( $Primes =~ m/(\d+)/g ) { my $Number = $_rg[$_][1]; $IsPrime = IsPrime($Number); println("Is '$Number' Prime? $IsPrime" ); } // Prints: Is '2' Prime? true // Is '3' Prime? true // Is '5' Prime? true // Is '7' Prime? true // Is '11' Prime? true // Is '13' Prime? true // Is '17' Prime? true // Is '19' Prime? true // Is '23' Prime? true // Is '29' Prime? true // Is '31' Prime? true // Is '37' Prime? true // Is '41' Prime? true // Is '43' Prime? true // Is '47' Prime? true // Is '53' Prime? true // Is '59' Prime? true // Is '61' Prime? true // Is '67' Prime? true // Is '71' Prime? true // Is '73' Prime? true // Is '79' Prime? true // Is '83' Prime? true // Is '89' Prime? true // Is '97' Prime? true // Is '101' Prime? true // Is '103' Prime? true // Is '107' Prime? true // Is '109' Prime? true // Is '113' Prime? true // Is '127' Prime? true // Is '131' Prime? true // Is '137' Prime? true // Is '139' Prime? true // Is '149' Prime? true // Is '151' Prime? true // Is '157' Prime? true // Is '163' Prime? true // Is '167' Prime? true // Is '173' Prime? true // Is '179' Prime? true // Is '181' Prime? true // Is '191' Prime? true // Is '193' Prime? true // Is '197' Prime? true // Is '199' Prime? true // Is '211' Prime? true // Is '223' Prime? true // Is '227' Prime? true // Is '229' Prime? true // Is '233' Prime? true // Is '239' Prime? true // Is '241' Prime? true // Is '251' Prime? true // Is '257' Prime? true // Is '263' Prime? true // Is '269' Prime? true // Is '271' Prime? true // Is '277' Prime? true // Is '281' Prime? true // Is '283' Prime? true // Is '293' Prime? true // Is '307' Prime? true // Is '311' Prime? true // Is '313' Prime? true // Is '317' Prime? true // Is '331' Prime? true // Is '337' Prime? true // Is '347' Prime? true // Is '349' Prime? true
