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Q: Why isn't 91 a prime number?

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because this number is not divisible by 2

yes 91 is divisable by 7 and 13 so no it isnt a prime #

91 is a prime number.

Composite

The second prime number after 91 is 101.

97 is the next prime number after 91.

91 is a multiple of 7. 41 is a prime number.

91 is not a prime number. 91 is a composite number having the factors 1, 7, 13, and 91.

Composite

91 is a composite number. The factors of 91 are 7 and 13.139 is a prime number13 is a prime number29 is a prime number.

91 x 1 = 91. 13 x 7 = 91. Prime numbers are only divisible by themselves & 1. False 91 is not a prime number.

91 cannot be in the prime factorization of any number because it is not a prime number itself.

No 91=13*7

91 is composite.

91

91 / 7 = 13. So No

Because 91 is not a prime number.

31 is a prime number.

31 is prime.

The prime number is 97 because it is only divisible by 1 and itself. 91 is divisible by 1, 7, 13, and 91.

One.

number times a number is 91: 1 & 917 & 13.91 is not a prime number

Only 1 & 91. The number 91 is a prime.

89 is the prime number, because 91 can be divided by 13 and 7, as well as itself and 1.

39 is not a prime number because it has four factors: 1,3,13,39 and because prime number are numbers who has 2 factors.