Originally Posted by pinchingyourballs View Post
Oh, the product of the first eight primes as 2*3*5*7*11*13*17*19 = 9699690, and, so, I've already accounted for this one, too.

(19 - 3) * 2 * 5 * 7 * 11 * 13 * 17 = 2722720, which, figuratively speaking, or in a different mathematical sense, may be read as 2*3*5*7*11*13*17*19 if wrap the 17 around to the 19.

In the sense that the latter bolded numeral is an inverse of the former.




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