31
16
The prime number is 47 and 4+7 = 11
A prime number with identical digits is 11.
2 and 3 are the first two prime numbers. The difference between them is 1
83
83
The number 11 is prime and has two identical digits.
It is: 97 minus 11 = 86
289
37
No, reversing the order of the digits of a two-digit prime number does not always result in a prime number.
No difference. Once you've found the factors of a number, the prime numbers on that list are the prime factors.