Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 621 and 627 the smallest integer that is 129789 that is divisible by both numbers.
Least Common Multiple (LCM) of 621 and 627 is 129789.
LCM(621,627) = 129789
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 621 and 627. First we will calculate the prime factors of 621 and 627.
Prime Factorization of 621
3 | 621 |
3 | 207 |
3 | 69 |
23 | 23 |
1 |
Prime factors of 621 are 3,23. Prime factorization of 621 in exponential form is:
621 = 33×231
Prime Factorization of 627
3 | 627 |
11 | 209 |
19 | 19 |
1 |
Prime factors of 627 are 3, 11,19. Prime factorization of 627 in exponential form is:
627 = 31×111×191
Now multiplying the highest exponent prime factors to calculate the LCM of 621 and 627.
LCM(621,627) = 33×111×191×231
LCM(621,627) = 129789
Factors of 621
List of positive integer factors of 621 that divides 621 without a remainder.
1, 3, 9, 23, 27, 69, 207, 621
Factors of 627
List of positive integer factors of 627 that divides 627 without a remainder.
1, 3, 11, 19, 33, 57, 209, 627
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 621 and 627, than apply into the LCM equation.
GCF(621,627) = 3
LCM(621,627) = ( 621 × 627) / 3
LCM(621,627) = 389367 / 3
LCM(621,627) = 129789
(i) The LCM of 627 and 621 is associative
LCM of 621 and 627 = LCM of 627 and 621
1. What is the LCM of 621 and 627?
Answer: LCM of 621 and 627 is 129789.
2. What are the Factors of 621?
Answer: Factors of 621 are 1, 3, 9, 23, 27, 69, 207, 621. There are 8 integers that are factors of 621. The greatest factor of 621 is 621.
3. What are the Factors of 627?
Answer: Factors of 627 are 1, 3, 11, 19, 33, 57, 209, 627. There are 8 integers that are factors of 627. The greatest factor of 627 is 627.
4. How to Find the LCM of 621 and 627?
Answer:
Least Common Multiple of 621 and 627 = 129789
Step 1: Find the prime factorization of 621
621 = 3 x 3 x 3 x 23
Step 2: Find the prime factorization of 627
627 = 3 x 11 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 129789 = 3 x 3 x 3 x 11 x 19 x 23
Step 4: Therefore, the least common multiple of 621 and 627 is 129789.