A three digit number has the same hundreds, tens and units digit. The sum of the prime factors of the number is 47. What is the 3 digit number?

Answer 1

is 111 prime?
nope, 1,3, 37, 111
but 111 is certainly a factor of whatever our answer is
111*1 or 2 or 3 or whatever up to 9

so 3, 37 and what?
How about 7 ?

777 = 7 * 3 * 37
10+37 = 47 sure enough

Answer 2

what are the factors of 777?

7, 111
7,3,37