Assignment:
Q1. What is a prime number, and why are prime numbers important?
Q2. What do you call a number that is not prime?
Q3. What is the largest prime number ever found?
Q4. Is the number 294,822,345,711 prime? How about 173,658,965? How can you tell without looking it up in someone else's table?
Provide complete and step by step solution for the question and show calculations and use formulas.