Prime Numbers

# Why can 1 not be a prime number?

###### Answered 2014-02-14 19:28:31

The definition of a Prime number is a number that is dividible by 1 and itself, so it has only two factors. 1 has only one factor, so it does not fit the definition of a prime number.

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## Related Questions

No; 1 is not a prime number. The lowest prime number is 2.

No 1 is neither a prime number or a composite number

A prime number is a number that is only divisible by itself and 1. 1 is NOT a prime number.

no it can not be a prime number as a prime number has has to have 2 factors in it and 1 only has 1 factor itself

1 is not a prime number but it is a square number

0 and 1 is not prime number because the prime number can only be divided by the number 1 and itself.

2 is a prime number. 1 is not a prime number

1 is not a prime number. By definition, a prime number has exactly two distinct divisors: 1 and itself. Thus, 1 cannot be a prime.

1 is a prime number, but 0 is neither a prime number nor a composite number.

1 is not a prime number. It is neither prime nor composite. It is known as unity. A prime number is a number with exactly two factors: 1 and itself. Since 1 has only one factor, it is not a prime number.

No. If two prime numbers are multiplied, then the result is a composite number. Reason 1: If you multiplied two numbers, that number's factors includes the numbers you multiplied by. Reason 2: A prime number cannot be divided into two numbers beside 1 and itself. 1 is not a prime number or a composite number by definition. If 1 was a prime number, then the product of 1*1 is 1, and 1 is a prime number, but 1 isn't a prime number.

Look at the definition of a prime number. A prime number has no factors, other than 1, or itself.Look at the definition of a prime number. A prime number has no factors, other than 1, or itself.Look at the definition of a prime number. A prime number has no factors, other than 1, or itself.Look at the definition of a prime number. A prime number has no factors, other than 1, or itself.

The number 1 is neither prime nor composite.

For a prime number to be a prime number it must only be divisible by itself and 1 and it must have 2 factors so 1 isn't a prime number because it only has 1 factor.

1 is not considered a prime number; 1 is a perfect square.

What are the prime numbers from 1 to 100? A: 2,3,5,7,11,13,17,19,23,29, 37,41,43,47,51,53,57,59,61,67,71,73,79,83,89,97 1 is NOT a prime number as a prime number (by definition) is a number that can ONLY be divided by itself and 1. 1 can only be divided by 1, which is both itself AND 1. So by definition, it is not a prime number. I hope it helps

Prime Number Testevery prime number that you enter in the Prime Number Test is congruent to 1. If N is prime then P=1.

A prime nubber is a number that can only be divided by it's self and 1. 1 is NOT a prime number. 2 is the ONLY even prime number.

A prime number can be divided only by 1 and itself. The number 2 is divisible only by 1 and 2, therefore it is a prime number.A prime number can be divided only by 1 and itself. The number 2 is divisible only by 1 and 2, therefore it is a prime number.

A prime number is a number that can only be divided by itself and 1. A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number.

1 is neither a prime nor composite number.

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