Summary of Features:

1. Test for primality of a given number;
2. Generation of a random prime number in a given range;
3. A given range retrieval of the first prime number;
4. A given range retrieval of the last prime number;
5. Automatic preparation of the range for further search;
6. Decimal/hexadecimal representation of input and output data;
7. Text representation of a result;
8. English/Russian user interface.