what is the smallest prime number that can be made from the sum of three different prime numbers?

Answer 1

primes are 2,3,5,7,11,13,17,19, 23,....

smallest that is the sum of 3 other primes is 19=11+5+3

try out a few

you need 3 odd primes to get a sum that's a prime, so you can't use 2

3+5+7 = 15 which is not prime

3+5+11 is the next smallest sum of 3 primes that is odd