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Mathematics
OpenStudy (anonymous):

is 81 a prime number is 81 a prime number @Mathematics

OpenStudy (anonymous):

No, it has more factors than 1 and itself.

OpenStudy (anonymous):

No because it can also be divided by 9.

OpenStudy (anonymous):

how about 91

OpenStudy (anonymous):

no, 7 and 13 are other factors

OpenStudy (anonymous):

Can you help me ndog33

OpenStudy (anonymous):

sure what do you need

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