The largest 2-digit prime number is
Prime numbers are numbers which are divisible by 1 and the "number itself",
So, 3 is a prime number as it is divisible by only 1 and 3.
99 is not a prime number as it is divisible by 1, 9, 11, 99.
98 is also not a prime number as it is divisible by 1, 2, 7, 49, 98.
The highest 2-digit prime number is 97, as it is divisible only by 1 and 97.