The first three prime numbers are 2, 3, 5. To find the mean, add them up, and divide this sum by how many numbers (3). So (2 + 3 + 5) /3 = 10/3 or approx 3.33
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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
3
The sum of the first five prime numbers is 28. The sum of the cubes of the first three prime numbers is 160. The average of 28 and 160 is 94.
If you mean 314159 then it is a prime number
i think you mean prime? if you do then yes 47 is a prime number