Question: what is the largest prime number less than 100?
Answer: They are 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,3,89, and 97. Originally Answered: What is the greatest prime number that is less than 100? 97 is the largest prime number below 100. Is -65 a prime number?