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Since 1 is a factor of every positive integer, there are no numbers with only even factors.

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Q: Which numbers have only even factors?
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Related questions

What kind of numbers only have even factors?

even numbers


Do only square numbers have an even number of factors?

No, only square numbers have an odd number of factors.


Do all even numbers have only even numbers for factors?

No. For example, 30 is an even number but two of its factors are odd; 5 and 15.


If the product of 2 numbers is even do the 2 factors have to be even?

No. the factors may be both even but only one of them needs to be.


What numbers has only two factors?

Numbers with only two factors, the number itself and one, are called prime numbers. Examples of prime numbers are 2 (which is the only even prime number) and 17.


Is two the only prime number?

no. 2 is the only even prime number. Prime numbers are numbers that only have two factors; one and itself. E.g. The number 7 only has two factors- 1x7=7. 2 is a factor of all even numbers, therefore no other even numbers are prime. They are composite. 2, however, is a prime number, as it's only factors are itself (2) and 1.


What are the prime and even numbers?

The only even number that is prime is 2. No other even numbers can be prime because 2 is a factor of them. Prime numbers can have only two factors: 1 and itself.


Do all even numbers have only even numbers as factors?

No. 24 has 3 as a factor. 30 has 15 as a factor.


Is an even number composite?

All even numbers are composite numbers except 2 which is the only even prime number because it has only two factors which are itself and one.


Are any prime numbers even numbers?

A prime number is any number that only has one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is 2.


Does even or odd numbers have more factors?

Some even numbers have more factors than some odd numbers and some odd numbers have more factors than some even numbers. As a group, even numbers have more factors than odd numbers.


Do odd or even numbers have more factors?

Some even numbers have more factors than some odd numbers and some odd numbers have more factors than some even numbers. As a group, even numbers have more factors than odd numbers.


Are the greatest common factors of 2 even numbers awlways even?

yes because even numbers only go into 2 4 6.....


What numbers are prime and even?

A prime number is any number that only has only one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is the number 2.


List all the prime numbers that are even?

A prime number is any number that only has only one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is the number 2.


Why are all prime numbers odd except for 2?

Simple. 2 has only 1 and 2 as factors, right? Now, if we take any EVEN numbers, they'd have 1, 2, itself, and possibly more factors, which makes all even numbers composite. Therefore, only odd numbers can be prime.


What is the meaning of even and odd factors?

All nonzero numbers have factors. Some factors are even numbers, some factors are odd numbers.


What are two examples of a type of number that has an odd number factor?

There are square numbers (numbers which are a square of an integer), such as 4. It's factors, listed are 1, 2, and 4. All square numbers have an odd number of factors. Then there's 1, which has only 1 factor: 1. All other numbers have an even number of factors. Prime numbers will have only 2 factors (2 is even).


Why do all numbers other than square numbers have an even number of factors?

Factors come in pairs. It is only in the case of a square number that the two middle factors are equal and so are counted only once.


What are the prime numbers from 1-200 which are even numbers?

A prime number is any number that only has one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is the number 2.


Are all even numbers composite numbers?

only 2 is a prime number because it has only 2 factors 1 and itself


Are all even numbers composite why?

Not all even numbers are composite. Take 2 for example; its an even number but it only has 2 factors; 1 and itself.


Will a prime number always have an odd numbers of factors?

All prime numbers have only 2 factors which are themselves and one. Al prime numbers are odd numbers except for 2 which is the only even prime number.


Can prime numbers be even?

Yes, but there is only one of them. A prime number is any number that only has only one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is the number 2.


Prime numbers can never be even numbers?

A prime number is any number that only has one and itself as factors. By definition even numbers have a factor of two. Therefore even numbers cannot be prime, with the exception of 2 itself. So 2 is the only even prime number.