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4x2 - 17x + 17 1st times last = 4(17) = 68

Factors of 68 are 1 and 68 their sum is 1+68 = 69

2 and 34 sum = 36

4 and 17 sum = 21

Since none of the sums is 17 (middle number) then this is prime when using integers.

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12y ago

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