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Which is the smallest positive prime which is some multiple of seven less than a cube of a counting number less than 10?
Wiki User
∙ 13y ago
Let's call the prime p, the multiple 7n, and the counting number c.
So:
p = c3 - 7n, p > 1, 0 < c < 10, n > 0
c can't be 1 or 2, since p and n have to be positive.
c = 3, then p = 27 - 7n
n = 2, then p = 13
So, the smallest prime that meets the conditions is 13.
Wiki User
∙ 13y ago
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