They are 2, 3, 5, 7, 11, 13, 17, 19 and 23.
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if you mean what three prime numbers add up to a prime number then the answer is : 5 + 7 + 11 = 23
31 and 23 are prime numbers.
The prime numbers up to 25 are 2, 3, 5, 7, 11, 13, 17, 19, and 23.
23 is a prime number.
23+11+61=95 :)