97
The only candidates are 64, 75, 86, and 97. 97 is the only prime in that group.
97
73 7-3 = 4 73 is prime and 37 is prime.
16
6849 and 0213
41
97
97
71
The only prime number less than 3 is 2.
The only prime number less than 3 is 2.
73
73 7-3 = 4 73 is prime and 37 is prime.
16
A single digit prime number
The number Winnie is describing is 73. It is between 60 and 100, and the tens digit (7) is two more than the ones digit (3). Additionally, 73 is a prime number, as it has no divisors other than 1 and itself.
29
87 is the only 2-digit number that is 6 greater and 13 less than a square, but it is not prime.