Least Common Multiple of 63 and 77

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Free LCM Calculator determines the least common multiple (LCM) between 63 and 77 the smallest integer that is 693 that is divisible by both numbers.

Least Common Multiple (LCM) of 63 and 77 is 693.

LCM(63,77) = 693

LCM of 63 and 77

Least common multiple or lowest common denominator (LCD) can be calculated in three ways;

LCM of:
and

Least Common Multiple of 63 and 77

LCM of 63 and 77 is 693

Least common multiple can be found by multiplying the highest exponent prime factors of 63 and 77. First we will calculate the prime factors of 63 and 77.

Prime Factorization of 63


3 63
3 21
7 7
1

Prime factors of 63 are 3,7. Prime factorization of 63 in exponential form is:

63 = 32×71

Prime Factorization of 77


7 77
11 11
1

Prime factors of 77 are 7,11. Prime factorization of 77 in exponential form is:

77 = 71×111

Now multiplying the highest exponent prime factors to calculate the LCM of 63 and 77.

LCM(63,77) = 32×71×111
LCM(63,77) = 693

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1, 3, 7, 9, 21, 63

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Least Common Multiple of 63 and 77 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 63 and 77, than apply into the LCM equation.

GCF(63,77) = 7
LCM(63,77) = ( 63 × 77) / 7
LCM(63,77) = 4851 / 7
LCM(63,77) = 693

Properties of LCM 63 and 77

(i) The LCM of 77 and 63 is associative

LCM of 63 and 77 = LCM of 77 and 63

Related Least Common Multiples of 63

Related Least Common Multiples of 77

Frequently Asked Questions on LCM of 63 and 77

1. What is the LCM of 63 and 77?

Answer: LCM of 63 and 77 is 693.

2. What are the Factors of 63?

Answer: Factors of 63 are 1, 3, 7, 9, 21, 63. There are 6 integers that are factors of 63. The greatest factor of 63 is 63.

3. What are the Factors of 77?

Answer: Factors of 77 are 1, 7, 11, 77. There are 4 integers that are factors of 77. The greatest factor of 77 is 77.

4. How to Find the LCM of 63 and 77?

Answer:

Least Common Multiple of 63 and 77 = 693

Step 1: Find the prime factorization of 63

63 = 3 x 3 x 7

Step 2: Find the prime factorization of 77

77 = 7 x 11

Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 693 = 3 x 3 x 7 x 11

Step 4: Therefore, the least common multiple of 63 and 77 is 693.