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Math and Arithmetic

Is 155 a composite number?


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Wiki User
2011-04-18 21:02:40
2011-04-18 21:02:40

no

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

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

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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.

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

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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.


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