All numbers have factors. Some factors are prime numbers. A prime factor is a factor that is a prime number. A common prime factor is a prime factor that appears on the list of factors of two or more given numbers.
Prime numbers.
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
None. 7 is a prime number.
All numbers have factors. Some numbers have some of the same factors as other numbers. These are common factors. If the factor is a prime number, it is a common prime factor. 3 is a prime number. 3 is a factor of 9. 3 is a factor of 12. 3 is a common prime factor of 9 and 12.
3 is a prime number. Prime numbers don't have factor trees. The factors of 3 are 1 and 3.
If done correctly, yes.
All numbers have factors. Some factors are prime numbers. A prime factor is a factor that is a prime number. A common prime factor is a prime factor that appears on the list of factors of two or more given numbers.
It means to express a number as the product of its factors. Factors are either composite numbers or prime numbers (except that 0 and 1 are neither prime nor composite).
All prime numbers have a common factor of 1.
Prime numbers have one distinct prime factor.
Prime numbers.
30 has three prime numbers and is a factor of 60.
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
Not a lot. They're both prime numbers. A factor that is prime is used to make other numbers.
None. 7 is a prime number.
express 5610 as the product of prime factors