This package contains an example program that uses Java's java.math.BigInteger from Swift to determine whether a given number is probably prime. You can try it out with your own very big number:

swift run JavaProbablyPrime <very big number>

The package itself demonstrates how to:

• Use the Java2Swift build tool plugin to wrap the java.math.BigInteger type in Swift.
• Create an instance of BigInteger in Swift and use its isProbablyPrime.