Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 415 and 421 the smallest integer that is 174715 that is divisible by both numbers.
Least Common Multiple (LCM) of 415 and 421 is 174715.
LCM(415,421) = 174715
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 415 and 421. First we will calculate the prime factors of 415 and 421.
Prime Factorization of 415
5 | 415 |
83 | 83 |
1 |
Prime factors of 415 are 5,83. Prime factorization of 415 in exponential form is:
415 = 51×831
Prime Factorization of 421
421 | 421 |
1 |
Prime factors of 421 are 421. Prime factorization of 421 in exponential form is:
421 = 4211
Now multiplying the highest exponent prime factors to calculate the LCM of 415 and 421.
LCM(415,421) = 51×831×4211
LCM(415,421) = 174715
Factors of 415
List of positive integer factors of 415 that divides 415 without a remainder.
1, 5, 83, 415
Factors of 421
List of positive integer factors of 421 that divides 421 without a remainder.
1, 421
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 415 and 421, than apply into the LCM equation.
GCF(415,421) = 1
LCM(415,421) = ( 415 × 421) / 1
LCM(415,421) = 174715 / 1
LCM(415,421) = 174715
(i) The LCM of 421 and 415 is associative
LCM of 415 and 421 = LCM of 421 and 415
1. What is the LCM of 415 and 421?
Answer: LCM of 415 and 421 is 174715.
2. What are the Factors of 415?
Answer: Factors of 415 are 1, 5, 83, 415. There are 4 integers that are factors of 415. The greatest factor of 415 is 415.
3. What are the Factors of 421?
Answer: Factors of 421 are 1, 421. There are 2 integers that are factors of 421. The greatest factor of 421 is 421.
4. How to Find the LCM of 415 and 421?
Answer:
Least Common Multiple of 415 and 421 = 174715
Step 1: Find the prime factorization of 415
415 = 5 x 83
Step 2: Find the prime factorization of 421
421 = 421
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 174715 = 5 x 83 x 421
Step 4: Therefore, the least common multiple of 415 and 421 is 174715.