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 815 the smallest integer that is 659335 that is divisible by both numbers.
Least Common Multiple (LCM) of 809 and 815 is 659335.
LCM(809,815) = 659335
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 815. First we will calculate the prime factors of 809 and 815.
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 815
5 | 815 |
163 | 163 |
1 |
Prime factors of 815 are 5,163. Prime factorization of 815 in exponential form is:
815 = 51×1631
Now multiplying the highest exponent prime factors to calculate the LCM of 809 and 815.
LCM(809,815) = 51×1631×8091
LCM(809,815) = 659335
Factors of 809
List of positive integer factors of 809 that divides 809 without a remainder.
1, 809
Factors of 815
List of positive integer factors of 815 that divides 815 without a remainder.
1, 5, 163, 815
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 809 and 815, than apply into the LCM equation.
GCF(809,815) = 1
LCM(809,815) = ( 809 × 815) / 1
LCM(809,815) = 659335 / 1
LCM(809,815) = 659335
(i) The LCM of 815 and 809 is associative
LCM of 809 and 815 = LCM of 815 and 809
1. What is the LCM of 809 and 815?
Answer: LCM of 809 and 815 is 659335.
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 815?
Answer: Factors of 815 are 1, 5, 163, 815. There are 4 integers that are factors of 815. The greatest factor of 815 is 815.
4. How to Find the LCM of 809 and 815?
Answer:
Least Common Multiple of 809 and 815 = 659335
Step 1: Find the prime factorization of 809
809 = 809
Step 2: Find the prime factorization of 815
815 = 5 x 163
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 659335 = 5 x 163 x 809
Step 4: Therefore, the least common multiple of 809 and 815 is 659335.