Question 1143895
.
<pre>
13 = 2 + 11.


16 = 5 + 11.


25 = 2 + 23.


27 can not be the sum of two primes, since then one of them must be even number (i.e. 2),  <U>but 27 - 2 = 25 IS NOT a PRIME</U>.


<U>ANSWER</U>.  27.
</pre>