A Prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
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1155 is obviously a multiple of 5 and a multiple of 11, so it is a composite number.
119 is a prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
1 is neither prime or composite, and is the only one that is positive. The term for one is something like the identity element.
54 Is actually composite because composite means it has to have more factors than 2. Its factors are 1,2,3,6,9,18,27,54Composite. Its divisible by 2 and cannot be prime.
Primes and composite numbers have two or more factors, including 1 and the number itself. 1 has only one factor, so it is neither a prime nor a composite number.