SOLUTION: its greater than 100 less than 200 its prime and the sum of its digits is 13

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Question 748637: its greater than 100 less than 200 its prime and the sum of its digits is 13
Found 2 solutions by tommyt3rd, timvanswearingen:
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
From a list of primes between 100 and 200 we get these choices:

139, 157, 193

:)

Answer by timvanswearingen(106) About Me  (Show Source):
You can put this solution on YOUR website!
157
You can narrow it down a little. You know the first digit is a 1, the last digit has to be odd for it to be prime, but can't be 1 since the sum of the digits is 13, and the middle digit has to also be odd for the sum of the digits to be 13.