Writing down all the factors of both numbers requires too much time so it is not a good idea to find solution by writing each factor of both numbers.
Method of prime factorization is one of the good methods to find GCF.
Prime factorization is like breaking a number into other numbers, prime numbers, and this factorization is unique. Prime factorization is like a blueprint for numbers.
Prime factorization of 1820 = 22 x 5 x 7 x 13
Prime factorization of 637 = 7 x 7 x 13
7, 13 and 7x13 are common in the prime factorization of both numbers, but 7x13 is the greatest among these numbers. So, 7x13 = 91 is the GCF of 1820 and 637.
7
The factors of 637 are: 1 7 13 49 91 637
637 = 7 * 7 * 13 = 72 * 13
Round off to the nearest hundred 637
What is the smallest whole number you can add to 637 and get all 5's in the answer?
The Greatest Common Factor (GCF) is: 1
The GCF of 468 and 637 is 13.
13 is the greatest common factor of 208 and 637. Factor each number: 208 = 2 x 2 x 2 x 2 x 13 637 = 7 x 7 x 13 The only common factor (and thus, the greatest common factor) is 13.
7
The least common multiple (LCM) of 91 and 49 is 637.
As a product of its prime factors: 7*7*13 = 637
The Least Common Multiple (LCM) for 169 637 845 is 41,405.
The greatest common factor of 208 and 637 is 13.
637
637
1 and 13
One way of writing the factor tree for 6370 is: 6 3 7 0 ^ 637 x 1000 ^ ^ 637 x 2 x 500 ^ ^ ^ 637 x 2 x 5 x 100 ^ ^ ^ ^ 637 x 2 x 5 x 5 x 20 ^ ^ ^ ^ 637 x 2 x 5 x 5 x 5 x 4 ^ ^ ^ ^ ^ ^ 637 x 2 x 5 x 5 x 5 x 2 x 2