97
A Prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 97 is the largest 2 digit prime number.
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97=largest 2 digit prime
The largest 2-digit prime number is 97.
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
The 3 largest 2 digit prime numbers are 83, 89, and 97. The sum is 269
The only even prime number is 2.