What is the lowest composite integer (**not** a prime) that is **not** a factor of 8! ?

8! = 8x7x6x5x4x3x2x1 = 2^3x7x(2x3)x5x2^2x3x2x1= 2^7x3^2x5x7

here if prime no was allowed then it would have been 11 but since only composite hence 11x(least possible value greater than 1 i.e, 2) = 11x2 =22

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