7 and 2
2+3+5+7+11 = 28
int sum = 0; int i; for(i = 0; i < n; ++i) { sum += i; }
No prime power exists since there are no duplicate prime numbers in the prime factorization.
As a product of its prime factors: 2*2*2*5 = 40 or as 23*5 = 40
18 is not a good first move. The sum of its proper factors is more than 18. Your opponent will have a three point lead. Large prime numbers are good first moves.
What is the product of th e prime factor 344
No number has that prime factorization since 4 isn't prime.
the sum is 34. good luck!
The sum is 24 = 16
You need at least two numbers to find a GCF. The prime factorization of 99 is 3 x 3 x 11. Once you have the other one, you can compare.
173
the smallest prime number is 2