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 A Composite Determination Problem (Posted on 2006-04-23)
Determine whether or not N is a composite number, where

N = 675*2621 + 677*2610 - 1

NOTE:
A prime number (or a prime) is a natural number that has exactly two (distinct) natural number divisors, which are 1 and the prime number itself. A composite number is a positive integer which has a positive divisor other than one or itself. By definition, every integer greater than one is either a prime number or a composite number. The numbers 0 and 1 are considered to be neither prime nor composite.

 See The Solution Submitted by K Sengupta Rating: 4.3333 (3 votes)

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 re(2): A first stab at the solution | Comment 12 of 14 |
(In reply to re: A first stab at the solution by Federico Kereki)

I can't equate that multiplication to the original polynomial.

OTOH, starting with x^12 and x^11 and playing around a little gave factors (x^12 + x^11 - 1) and (x^11 - x^10 + 1).

 Posted by xdog on 2006-04-27 16:17:13

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