The two numbers are prime numbers, and the two product is 217. how can we solve this problem?

The two numbers are prime numbers, and the two product is 217. The two numbers are prime numbers, and the two product is 217. calculate the two numbers and perform factorization (screening) PHPcodefunctionFactorization ($ num) {$ end = sqrt ($ num); $ k = 1; for ($ I = 2; $ I & lt; = $ end; $ two numbers are prime numbers. The product of two numbers is 217.
Two numbers are prime numbers, and the product of two numbers is 217.

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Factorization (screening)

PHP code

Function Factorization ($ num) {$ end = sqrt ($ num); $ k = 1; for ($ I = 2; $ I <= $ end; $ I + = $ k, $ k = 2) {if ($ num % $ I) = 0) {while ($ num % $ I) = 0) {$ num/= $ I; $ r [] = $ I ;}$ end = sqrt ($ num) ;}} if ($ num> 1) $ r [] = $ num; return $ r;} print_r (Factorization (217 ));
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Let's try it out...
For ($ I = 1; $ I <(217/2 + 1); $ I ++)
{
$ V = 217/$ I;
If ($ v % 2 = 1 & $ I % 2 = 1)
{
Break;
}
}
Echo "$ v * $ I = 217; and $ v $ I is a prime number .";
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For ($ I = 3; $ I