Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 417 and 421 the smallest integer that is 175557 that is divisible by both numbers.
Least Common Multiple (LCM) of 417 and 421 is 175557.
LCM(417,421) = 175557
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 417 and 421. First we will calculate the prime factors of 417 and 421.
Prime Factorization of 417
3 | 417 |
139 | 139 |
1 |
Prime factors of 417 are 3,139. Prime factorization of 417 in exponential form is:
417 = 31×1391
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 417 and 421.
LCM(417,421) = 31×1391×4211
LCM(417,421) = 175557
Factors of 417
List of positive integer factors of 417 that divides 417 without a remainder.
1, 3, 139, 417
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 417 and 421, than apply into the LCM equation.
GCF(417,421) = 1
LCM(417,421) = ( 417 × 421) / 1
LCM(417,421) = 175557 / 1
LCM(417,421) = 175557
(i) The LCM of 421 and 417 is associative
LCM of 417 and 421 = LCM of 421 and 417
1. What is the LCM of 417 and 421?
Answer: LCM of 417 and 421 is 175557.
2. What are the Factors of 417?
Answer: Factors of 417 are 1, 3, 139, 417. There are 4 integers that are factors of 417. The greatest factor of 417 is 417.
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 417 and 421?
Answer:
Least Common Multiple of 417 and 421 = 175557
Step 1: Find the prime factorization of 417
417 = 3 x 139
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 = 175557 = 3 x 139 x 421
Step 4: Therefore, the least common multiple of 417 and 421 is 175557.