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 625 the smallest integer that is 388125 that is divisible by both numbers.
Least Common Multiple (LCM) of 621 and 625 is 388125.
LCM(621,625) = 388125
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 625. First we will calculate the prime factors of 621 and 625.
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 625
5 | 625 |
5 | 125 |
5 | 25 |
5 | 5 |
1 |
Prime factors of 625 are 5. Prime factorization of 625 in exponential form is:
625 = 54
Now multiplying the highest exponent prime factors to calculate the LCM of 621 and 625.
LCM(621,625) = 33×54×231
LCM(621,625) = 388125
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 625
List of positive integer factors of 625 that divides 625 without a remainder.
1, 5, 25, 125, 625
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 621 and 625, than apply into the LCM equation.
GCF(621,625) = 1
LCM(621,625) = ( 621 × 625) / 1
LCM(621,625) = 388125 / 1
LCM(621,625) = 388125
(i) The LCM of 625 and 621 is associative
LCM of 621 and 625 = LCM of 625 and 621
1. What is the LCM of 621 and 625?
Answer: LCM of 621 and 625 is 388125.
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 625?
Answer: Factors of 625 are 1, 5, 25, 125, 625. There are 5 integers that are factors of 625. The greatest factor of 625 is 625.
4. How to Find the LCM of 621 and 625?
Answer:
Least Common Multiple of 621 and 625 = 388125
Step 1: Find the prime factorization of 621
621 = 3 x 3 x 3 x 23
Step 2: Find the prime factorization of 625
625 = 5 x 5 x 5 x 5
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 388125 = 3 x 3 x 3 x 5 x 5 x 5 x 5 x 23
Step 4: Therefore, the least common multiple of 621 and 625 is 388125.