2+3+5+7+11 = 28/5 = 5.6
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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.
No. Go to www.ask.com and enter your question in the search box. First result there is this which gives you the answer. http://www.mathwarehouse.com/arithmetic/numbers/prime-number/prime-factorization.php?number=176 If the number ends in 0, 2, 4, 6, or 8, it is divisible by two. If it ends in 0 or 5, it is divisible by five. If its digits total some multiple of 3, it is divisible by 3.
Then it is 2310.
The largest five-digit prime number is 99,991.
It is a prime.