Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 815 and 818 the smallest integer that is 666670 that is divisible by both numbers.
Least Common Multiple (LCM) of 815 and 818 is 666670.
LCM(815,818) = 666670
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 815 and 818. First we will calculate the prime factors of 815 and 818.
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
Prime Factorization of 818
2 | 818 |
409 | 409 |
1 |
Prime factors of 818 are 2,409. Prime factorization of 818 in exponential form is:
818 = 21×4091
Now multiplying the highest exponent prime factors to calculate the LCM of 815 and 818.
LCM(815,818) = 21×51×1631×4091
LCM(815,818) = 666670
Factors of 815
List of positive integer factors of 815 that divides 815 without a remainder.
1, 5, 163, 815
Factors of 818
List of positive integer factors of 818 that divides 818 without a remainder.
1, 2, 409, 818
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 815 and 818, than apply into the LCM equation.
GCF(815,818) = 1
LCM(815,818) = ( 815 × 818) / 1
LCM(815,818) = 666670 / 1
LCM(815,818) = 666670
(i) The LCM of 818 and 815 is associative
LCM of 815 and 818 = LCM of 818 and 815
1. What is the LCM of 815 and 818?
Answer: LCM of 815 and 818 is 666670.
2. 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.
3. What are the Factors of 818?
Answer: Factors of 818 are 1, 2, 409, 818. There are 4 integers that are factors of 818. The greatest factor of 818 is 818.
4. How to Find the LCM of 815 and 818?
Answer:
Least Common Multiple of 815 and 818 = 666670
Step 1: Find the prime factorization of 815
815 = 5 x 163
Step 2: Find the prime factorization of 818
818 = 2 x 409
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 666670 = 2 x 5 x 163 x 409
Step 4: Therefore, the least common multiple of 815 and 818 is 666670.