Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 8421 and 8427 the smallest integer that is 23654589 that is divisible by both numbers.
Least Common Multiple (LCM) of 8421 and 8427 is 23654589.
LCM(8421,8427) = 23654589
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 8421 and 8427. First we will calculate the prime factors of 8421 and 8427.
Prime Factorization of 8421
3 | 8421 |
7 | 2807 |
401 | 401 |
1 |
Prime factors of 8421 are 3, 7,401. Prime factorization of 8421 in exponential form is:
8421 = 31×71×4011
Prime Factorization of 8427
3 | 8427 |
53 | 2809 |
53 | 53 |
1 |
Prime factors of 8427 are 3,53. Prime factorization of 8427 in exponential form is:
8427 = 31×532
Now multiplying the highest exponent prime factors to calculate the LCM of 8421 and 8427.
LCM(8421,8427) = 31×71×532×4011
LCM(8421,8427) = 23654589
Factors of 8421
List of positive integer factors of 8421 that divides 8421 without a remainder.
1, 3, 7, 21, 401, 1203, 2807, 8421
Factors of 8427
List of positive integer factors of 8427 that divides 8427 without a remainder.
1, 3, 53, 159, 2809, 8427
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8421 and 8427, than apply into the LCM equation.
GCF(8421,8427) = 3
LCM(8421,8427) = ( 8421 × 8427) / 3
LCM(8421,8427) = 70963767 / 3
LCM(8421,8427) = 23654589
(i) The LCM of 8427 and 8421 is associative
LCM of 8421 and 8427 = LCM of 8427 and 8421
1. What is the LCM of 8421 and 8427?
Answer: LCM of 8421 and 8427 is 23654589.
2. What are the Factors of 8421?
Answer: Factors of 8421 are 1, 3, 7, 21, 401, 1203, 2807, 8421. There are 8 integers that are factors of 8421. The greatest factor of 8421 is 8421.
3. What are the Factors of 8427?
Answer: Factors of 8427 are 1, 3, 53, 159, 2809, 8427. There are 6 integers that are factors of 8427. The greatest factor of 8427 is 8427.
4. How to Find the LCM of 8421 and 8427?
Answer:
Least Common Multiple of 8421 and 8427 = 23654589
Step 1: Find the prime factorization of 8421
8421 = 3 x 7 x 401
Step 2: Find the prime factorization of 8427
8427 = 3 x 53 x 53
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 23654589 = 3 x 7 x 53 x 53 x 401
Step 4: Therefore, the least common multiple of 8421 and 8427 is 23654589.