There are infinitely many possible answers. The following is a solution as a polynomial of the lowest order:
Un = (2n5 - 35n4 +230n3 - 699n2 +996n - 456)/4 for n = 1, 2, 3, ...
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24 is not a prime number because is is divisible by 2 and 3. 24/2 = 12, then 12/2 = 6, and 6/ 2 = 3. 2 and 3 are primes.
The prime factorization of 12 is 2 x 2 x 3. So, the prime numbers for 12 are 2 and 3.
3.
number factors for :12=2*2*318=2*3*326=2*13
* 12 is a composite integer (meaning that it is not prime). * 12 in factor form is 2*2*3. * 12 is an even number. * 12 is divisible by 1, 2, 3, 4, 6, and 12. * 12 is a two-digit number. * 12 is an integer, as well as a real, rational, whole, and natural number.