Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 5415 and 5421 the smallest integer that is 9784905 that is divisible by both numbers.
Least Common Multiple (LCM) of 5415 and 5421 is 9784905.
LCM(5415,5421) = 9784905
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 5415 and 5421. First we will calculate the prime factors of 5415 and 5421.
Prime Factorization of 5415
3 | 5415 |
5 | 1805 |
19 | 361 |
19 | 19 |
1 |
Prime factors of 5415 are 3, 5,19. Prime factorization of 5415 in exponential form is:
5415 = 31×51×192
Prime Factorization of 5421
3 | 5421 |
13 | 1807 |
139 | 139 |
1 |
Prime factors of 5421 are 3, 13,139. Prime factorization of 5421 in exponential form is:
5421 = 31×131×1391
Now multiplying the highest exponent prime factors to calculate the LCM of 5415 and 5421.
LCM(5415,5421) = 31×51×131×192×1391
LCM(5415,5421) = 9784905
Factors of 5415
List of positive integer factors of 5415 that divides 5415 without a remainder.
1, 3, 5, 15, 19, 57, 95, 285, 361, 1083, 1805, 5415
Factors of 5421
List of positive integer factors of 5421 that divides 5421 without a remainder.
1, 3, 13, 39, 139, 417, 1807, 5421
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 5415 and 5421, than apply into the LCM equation.
GCF(5415,5421) = 3
LCM(5415,5421) = ( 5415 × 5421) / 3
LCM(5415,5421) = 29354715 / 3
LCM(5415,5421) = 9784905
(i) The LCM of 5421 and 5415 is associative
LCM of 5415 and 5421 = LCM of 5421 and 5415
1. What is the LCM of 5415 and 5421?
Answer: LCM of 5415 and 5421 is 9784905.
2. What are the Factors of 5415?
Answer: Factors of 5415 are 1, 3, 5, 15, 19, 57, 95, 285, 361, 1083, 1805, 5415. There are 12 integers that are factors of 5415. The greatest factor of 5415 is 5415.
3. What are the Factors of 5421?
Answer: Factors of 5421 are 1, 3, 13, 39, 139, 417, 1807, 5421. There are 8 integers that are factors of 5421. The greatest factor of 5421 is 5421.
4. How to Find the LCM of 5415 and 5421?
Answer:
Least Common Multiple of 5415 and 5421 = 9784905
Step 1: Find the prime factorization of 5415
5415 = 3 x 5 x 19 x 19
Step 2: Find the prime factorization of 5421
5421 = 3 x 13 x 139
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 9784905 = 3 x 5 x 13 x 19 x 19 x 139
Step 4: Therefore, the least common multiple of 5415 and 5421 is 9784905.