factors: 1, 3, 53, 159
prime factors: 3, 53
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No - its positive integer factors are 1, 3, 53 and 159.
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. 159 is composite.
477 is a composite number. Its factors are 1, 3, 9, 53, 159, and 477.
If you mean 314159 then it is a prime number
no it is not because 3*159=477