The number 97 (or any Prime number) is prime because it has no integral divisors aside from 1 and itself. The number 1 will go into 97 exactly 97 times, and 97 will go into 97 exactly 1 time. Other than that, there are no counting numbers (integers or whole numbers) that will divide into it and give a whole number dividend.
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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 highest 2 digit prime number.
It is a prime number because it is a whole number (not a decimal) that can only be divided equally (without a remainder) by 1 and 97.
97 is a prime number.
97 is prime.
9409 is not prime. 9409 = 97 * 97
prime number just before 97 = 89
97 is a prime number. 98 and 99 are not.