SOLUTION: i am a 3 digit number,the sum of my digits is 5 and i am prime too.if my ones and hundreds digits are interchanged i still remain prime.who am i

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Question 1043236: i am a 3 digit number,the sum of my digits is 5 and i am prime too.if my ones and hundreds digits are interchanged i still remain prime.who am i
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52914) About Me  (Show Source):
You can put this solution on YOUR website!
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131.

1. It can not be nothing else. // It can not start (and end) by 2.

2. You can use the table of primes from the Internet.


Answer by MathTherapy(10557) About Me  (Show Source):
You can put this solution on YOUR website!

i am a 3 digit number,the sum of my digits is 5 and i am prime too.if my ones and hundreds digits are interchanged i still remain prime.who am i
Digits MUST repeat, and as such, it's obvious that it's: highlight_green%28matrix%281%2C3%2C+113%2C+or%2C+311%29%29