Prime numbers help you to find the LCM and the GCF.
The answer depends on whether or not the prime number is a factor of the other number.If the prime number is a factor of the other number then the GCF is the prime, otherwise the GCF is 1.
Two numbers are co-prime if their GCF is 1.
A whole number is co-prime with another whole number if their GCF is 1.
Numbers are co-prime when their GCF is 1.
its relatively prime
GCF of a composite number and a prime number is always 1. Here, 5 is a prime number therefore, gcf is 1.
GCF of a prime number and a composite number is 1 if the composite number is not a multiple of the prime number. Here, 5 is a prime number and 108 is a composite number(not the multiple of 5). Therefore GCF of 108 and 5 is 1.
7 As a note: if one of the numbers in a GCF problem is a prime number, then the answer must be either 1 or that prime number. In this case, the other two are both divisible by 7 so it's the prime rather than 1.
Find the factor pairs of each number. The greatest factor in common is the GCF. A hint, the definition of a prime number is a number with only two factors: 1 and itself.
Find the GCF of the two numbers. If the GCF is 1, the numbers are relatively prime. or Look at the prime factorization of the first number. Choose a second number that doesn't have any prime factors in common with the first.
Use prime factorization to find the gcf of 65 and 195