SOLUTION: Mathematics have been searching for a formula that yields prime numbers. One such formula was X square – X + 41. Select some numbers for X, Substitute them in the formula, and se

Algebra ->  Equations -> SOLUTION: Mathematics have been searching for a formula that yields prime numbers. One such formula was X square – X + 41. Select some numbers for X, Substitute them in the formula, and se      Log On


   

Question 312163: Mathematics have been searching for a formula that yields prime numbers. One such formula was X square – X + 41. Select some numbers for X, Substitute them in the formula, and see if prime numbers occur. Try to find a number for X that when substituted in the formula yields a composite number. Please select at least 5 numbers.

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
If x = 1 you get 41
If x = 2 you get 43
If x = 3 you get 47
If x = 4 you get 53
If x = 5 you get 61
These are all prime, BUT if you choose x = 41, you get 1681, and that is not prime...it is composite...