# Is 2 or 8 prime numbers?

A prime number is a number thats only factors are 1 and itself.

So find the factors of 2. They are 1, and 2. So 2 is prime.

A composite number is a number that has more than a pair of factors.

So find the factors of 8. They are 1, and 8. They are 2, and 4. 8 has more than 1 pair of factors. So it is composite

### What are numbers that have 2 4 8 factors?

Numbers that have 2 factors are prime numbers; Numbers that have 4 factors are either: * the cube of a prime; or * the product of two different primes; Numbers that have 8 factors are either: * a prime to the power 7; * the product of a prime cubed and different prime; * the product of three different primes.

### How do you find the prime factorization of 56?

Prime factors of 56 First, what two numbers multiplied give you 56? 7 x 8 Is either of these a prime number?? Yes, 7 is prime. What about 8? What two numbers multiplied together give you 8? 2 x 4 Is either of these a prime number?? Yes, 2 is prime. What about 4? What two numbers multiplied together give you 4? 2 x 2 Is either of these a prime number?? Yes, both are…

### What are the prime factors of 40?

The prime factors of 40 are 2 and 5 To find the prime numbers of 40, you can find its prime factorization. Start with any two of its factors, such as 8 X 5. 5 is a prime number, but 8 can be factored into 4 X 2. 2 is a prime number, but 4 can be factored into 2 X 2. The prime factorization of 40 is 2 X 2 X 2 X 5…

### What are a dozen or more facts about prime numbers?

1 Prime numbers have only 2 factors which are themselves and one 2 Prime numbers can't be composite numbers which have more than 2 factors 3 Prime numbers are odd except for two which is the only even prime number 4 Prime numbers are used in finding the LCM of 2 or more numbers 5 Prime numbers are used in finding the HCF of 2 or more numbers 6 Prime numbers are used in finding…

### What is a prime or composite number?

A prime number is a positive integer that is only divisible by 1 and itself and is not 1. The first prime numbers are 2, 3, 5, 7 and 11. A composite number is a positive integer that is not a prime and is not 1. The first composite numbers are 4, 6, 8, 9 and 10. They are called composite numbers because they can be "composed" of smaller factors, like 4 = 2 ×…

### What is the greatest common factor of 8 and 17?

The factors of 8 are 1, 2, 4, and 8. The factors of 17 are 1 and 17, since it is a prime number. The only common factor is 1. Therefore, 1 is the greatest common factor, which means 8 and 17 are relatively prime. Since one of the numbers is a prime number (in this case 17) and the other number (in this case 8) is not a multiple of it, there cannot be…

### Prime numbers between 8 and 12?

The only prime between 8 and 12 is 11. To find out if a number is prime, just try dividing it by all prime numbers between 2 and that number (including 2). The easiest method to do this is to write all numbers from 2 to your number down. Then cross out all numbers divisible by 2. Now cross out all numbers divisible by the next lowest number that is not crossed out (which is…

### Can a whole number ending in 8 be a prime number why?

No, 8 is an even number. ALL prime numbers are odd numbers (excluding 2), that does not mean, however, that all odd numbers are prime numbers. Prime numbers do not have any divisors, even numbers do. Let's say the this number is 18. We know 1 and 18 are one set of divisors. But there are more: 2 and 9, and 3 and 6, thus concluding it is not a prime number. Short list of…

### What are a dozen or more prime facts relevant to prime numbers?

1 Prime numbers have only 2 factors which are themselves and one 2 Prime numbers are different to composite numbers which have more than 2 factors 3 Prime numbers are rational because they can be expressed as improper fractions 4 Prime numbers are integers which are whole numbers 5 Prime numbers are used to find the lowest common multiple of numbers 6 Prime numbers are used to find the highest common factor of numbers 7…