31.
The smallest is 29.
The number is 23.
There are actually three valid answers: 17, 53, and 71 All are prime and all have digits adding to 8.
995
There are two numbers that satisfy the criteria. 38 and 83
12
The number is 17.
The smallest is 29.
43
13
The number is 23.
2014 ( The sum of the digits = 7, a prime number )
It is: 59
what number is prime to 40 29 - it's a prime number (divisible only by 1 and itself) and if you sum the two digits 2 + 9 = 11
2025.
59
67