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Yielding a Composite Number

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A formula that yields prime numbers. One such formula was x^2 - 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.

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Solution Summary

This solution shows how man numbers can be plugged in to the formula to yield prime numbers.

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Let p(x) = x^2 - x + 41

Lets plug in x = 1, 2, 3, 5, 7, 10, 12 and 20 and see if we get prime numbers

p(1) = 1^2 - 1 + 41 = 41 ...

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