Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 809 and 813 the smallest integer that is 657717 that is divisible by both numbers.
Least Common Multiple (LCM) of 809 and 813 is 657717.
LCM(809,813) = 657717
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 809 and 813. First we will calculate the prime factors of 809 and 813.
Prime Factorization of 809
809 | 809 |
1 |
Prime factors of 809 are 809. Prime factorization of 809 in exponential form is:
809 = 8091
Prime Factorization of 813
3 | 813 |
271 | 271 |
1 |
Prime factors of 813 are 3,271. Prime factorization of 813 in exponential form is:
813 = 31×2711
Now multiplying the highest exponent prime factors to calculate the LCM of 809 and 813.
LCM(809,813) = 31×2711×8091
LCM(809,813) = 657717
Factors of 809
List of positive integer factors of 809 that divides 809 without a remainder.
1, 809
Factors of 813
List of positive integer factors of 813 that divides 813 without a remainder.
1, 3, 271, 813
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 809 and 813, than apply into the LCM equation.
GCF(809,813) = 1
LCM(809,813) = ( 809 × 813) / 1
LCM(809,813) = 657717 / 1
LCM(809,813) = 657717
(i) The LCM of 813 and 809 is associative
LCM of 809 and 813 = LCM of 813 and 809
1. What is the LCM of 809 and 813?
Answer: LCM of 809 and 813 is 657717.
2. What are the Factors of 809?
Answer: Factors of 809 are 1, 809. There are 2 integers that are factors of 809. The greatest factor of 809 is 809.
3. What are the Factors of 813?
Answer: Factors of 813 are 1, 3, 271, 813. There are 4 integers that are factors of 813. The greatest factor of 813 is 813.
4. How to Find the LCM of 809 and 813?
Answer:
Least Common Multiple of 809 and 813 = 657717
Step 1: Find the prime factorization of 809
809 = 809
Step 2: Find the prime factorization of 813
813 = 3 x 271
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 657717 = 3 x 271 x 809
Step 4: Therefore, the least common multiple of 809 and 813 is 657717.