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. 11 is prime.
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11 is prime.
11 is a prime
1573 is not prime. 1573 = 11 * 11 * 13. Thus, it is a composite number.
no its a prime number
407 is not prime. 407 = 11 * 37