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Because it has no divisors other than itself and one. That is the definition of a Prime number.
Wiki User
∙ 6y ago
Wiki User
∙ 13y agoNo.
It's divisible by a million: 31 million = 31 x 1 million.
Along with being divisible by 10, 100, 1000, 10000, 100000 amongst others.
Wiki User
∙ 11y agoYes, 31 is a prime because it can only be divided by 1 and itself.
Wiki User
∙ 9y agoOn its own 31 is a prime number because it only has two factors which are itself and one
Wiki User
∙ 15y agoYes.
Wiki User
∙ 12y agoYes.
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Why is 31 not a prime number?
31 is a prime number
Is 31 prime or not?
31 is a prime number
What is the prime factorizer of 31?
31 has no prime factors because it is a prime number so it has two factors, 1 and 31.
What is the prime factalization of 31?
31 is a prime number. Its only prime factor is 31.
Is 31 prime or composite number?
31 is prime.
Why is 31 not a prime number?
31 is a prime number
What number go into 31 evenly?
1 and 31 (31 is a Prime number).
Is 31 prime or not?
31 is a prime number
What are the prime factors of 31?
31 is prime so 31 is the prime factorization of 31
How do you work out the prime number of 31?
31 is already a prime number.
What is the prime factorizer of 31?
31 has no prime factors because it is a prime number so it has two factors, 1 and 31.
What is the prime factalization of 31?
31 is a prime number. Its only prime factor is 31.
Is 31 composeite or prime?
31 is a Prime Number.
Is 31 prime or composite number?
31 is prime.
Is 31 a prime composite or square?
31 is a prime number.
What prime number falls after 31?
The next prime number after 31 is 37
Which of 21 31 51 and 91 is a prime number?
31 is a prime number.
