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Q: Is the number 155 composite or prime?

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155 is not a prime number, but a composite number, as it is divisible by 5 and 31.

155 is a composite number. Its factors are 1, 5, 31, and 155.

155 five is composite. It is composite because it has 5 as a factor. The only number that can be neither prime nor composite is 1.

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. 155 is composite.

155 is not a prime number, hint: Any number ending in a 5 is divisible by 5.155 is a composite number

465 is a composite number. Its positive integer factors are: 1, 3, 5, 15, 31, 93, 155, 465

no

It is a composite number.

It is not a prime number, it is a composite number.

It is not a prime number, it is a composite number.

It is a composite number, not a prime number.

It is a prime number, and therefore not a composite number.251 is prime.

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