To boast that their age is a prime number, a nonagenarian must be how old?
Correct answer: 97
Mars V
Yana, Nope. 61.
Yana
Oh well. I tried .
Yana
Mars V, 70 ?
Yana
You made me do math !
Mars V
When I was 43, my age was a prime number whose digits add up to 7. How old will I be next time that happens?