Best Answer

Greatest Common Factor

The difference between the two numbers, 77 - 63, is 14. It they have a greatest common factor other than 1, it is 14 or a factor of 14, such as 2 or 7. The numbers are not divisible by 14, but they are divisible by 7, so the greatest common factor is 7.

Another way to determine the greatest common factor is to find all the factors of the numbers and compare them.

The factors of 63 are 1, 3, 7, 9, 21, and 63.

The factors of 77 are 1, 7, 11, and 77.

The common factors are 1 and 7. Therefore, the greatest common factor is 7.

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 63 are 3, 3, and 7.

The prime factors of 77 are 7 and 11.

The prime factors in common are a single 7, so the greatest common factor is 7.

Least Common Multiple

The least common multiple of two numbers is their product divided by their greatest common factor: 63 x 77 ÷ 7 = 693.

More answers

Lvl 2

Lowest common factor of 7,63 and 7

Q: What is greatest common factor and least common multiple of 63 and 77?

Write your answer...

Submit

Still have questions?

Continue Learning about Basic Math

The Greatest Common Factor of 15, 45: 15The Least Common Multiple of 15, 45: 45

Yes, the least common multiple of two numbers is always divisible by those numbers' greatest common factor.

The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of 28 and 48 is 4. Therefore, the least common multiple is 28 x 48 ÷ 4 = 336.

The LCM of 20 and 52 is 260. The least common multiple is the product of the two numbers divided by their greatest common factor. The greatest common factor of 20 and 52 is 4, so their least common multiple is 20 x 52 ÷ 4 = 260.

54

Related questions

The greatest common factor is 2 and the least common multiple is also 2.

Greatest common factor (GCF) =7 Least common multiple (LCM) =693

The greatest common factor of 20 and 120 is 20, and the least common multiple of 20 and 120 is 120

The Greatest Common Factor (GCF) of (32,49) is 1The Least Common Multiple (LCM) of (32,49) is 1568

The greatest common factor(gcf) of 4 and 32 is 4. The least common multiple of 4 and 32 is 32.

The greatest common multiple is infinitely large, the least common multiple is 1365, the greatest common factor is 1.

The least common multiple is the product of the two numbers divided by their greatest common factor. Their greatest common factor is 8, so the least common multiple is 56 x 64 ÷ 8 = 448.

Itself

The least common multiple is the product of the two numbers divided by their greatest common factor. The greatest common factor of 44 and 60 is 4, so the least common multiple is 44 x 60 ÷ 4 = 660.

the least common multiple is what the numbers you are using divide into. e.g. 3 and 6 have 12 as the common factor. the greatest common factor is what divides into your numbers. 6 and 9 have 3 as the greatest common factor

The Greatest Common Factor of 15, 45: 15The Least Common Multiple of 15, 45: 45

The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of 5 and 23 is 1. (See related question "What is the greatest common factor of 5 and 23?" for this calculation.) So, the least common multiple is 5 x 23 ÷ 1 = 115.