Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 915 and 916 the smallest integer that is 838140 that is divisible by both numbers.
Least Common Multiple (LCM) of 915 and 916 is 838140.
LCM(915,916) = 838140
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 915 and 916. First we will calculate the prime factors of 915 and 916.
Prime Factorization of 915
3 | 915 |
5 | 305 |
61 | 61 |
1 |
Prime factors of 915 are 3, 5,61. Prime factorization of 915 in exponential form is:
915 = 31×51×611
Prime Factorization of 916
2 | 916 |
2 | 458 |
229 | 229 |
1 |
Prime factors of 916 are 2,229. Prime factorization of 916 in exponential form is:
916 = 22×2291
Now multiplying the highest exponent prime factors to calculate the LCM of 915 and 916.
LCM(915,916) = 22×31×51×611×2291
LCM(915,916) = 838140
Factors of 915
List of positive integer factors of 915 that divides 915 without a remainder.
1, 3, 5, 15, 61, 183, 305, 915
Factors of 916
List of positive integer factors of 916 that divides 916 without a remainder.
1, 2, 4, 229, 458, 916
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 915 and 916, than apply into the LCM equation.
GCF(915,916) = 1
LCM(915,916) = ( 915 × 916) / 1
LCM(915,916) = 838140 / 1
LCM(915,916) = 838140
(i) The LCM of 916 and 915 is associative
LCM of 915 and 916 = LCM of 916 and 915
1. What is the LCM of 915 and 916?
Answer: LCM of 915 and 916 is 838140.
2. What are the Factors of 915?
Answer: Factors of 915 are 1, 3, 5, 15, 61, 183, 305, 915. There are 8 integers that are factors of 915. The greatest factor of 915 is 915.
3. What are the Factors of 916?
Answer: Factors of 916 are 1, 2, 4, 229, 458, 916. There are 6 integers that are factors of 916. The greatest factor of 916 is 916.
4. How to Find the LCM of 915 and 916?
Answer:
Least Common Multiple of 915 and 916 = 838140
Step 1: Find the prime factorization of 915
915 = 3 x 5 x 61
Step 2: Find the prime factorization of 916
916 = 2 x 2 x 229
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 838140 = 2 x 2 x 3 x 5 x 61 x 229
Step 4: Therefore, the least common multiple of 915 and 916 is 838140.