[Answer] To boast that their age is a prime number, a nonagenarian must be how old?

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To boast that their age is a prime number, a nonagenarian must be how old?

• 97:As we learned on Trivia Today five months ago, a prime number is a whole number whose only factors are 1 and the number itself. For example, the prime numbers from 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97. Prime numbers are divisible only by the number 1 or itself. With that in mind, a nonagenarian is a person whose age is in the nineties. The number 97 is the only prime number in the nineties. That's because 97 is not divisible by any other natural number apart from 1 and 97.

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