Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 909 and 915 the smallest integer that is 277245 that is divisible by both numbers.
Least Common Multiple (LCM) of 909 and 915 is 277245.
LCM(909,915) = 277245
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 909 and 915. First we will calculate the prime factors of 909 and 915.
Prime Factorization of 909
3 | 909 |
3 | 303 |
101 | 101 |
1 |
Prime factors of 909 are 3,101. Prime factorization of 909 in exponential form is:
909 = 32×1011
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
Now multiplying the highest exponent prime factors to calculate the LCM of 909 and 915.
LCM(909,915) = 32×51×611×1011
LCM(909,915) = 277245
Factors of 909
List of positive integer factors of 909 that divides 909 without a remainder.
1, 3, 9, 101, 303, 909
Factors of 915
List of positive integer factors of 915 that divides 915 without a remainder.
1, 3, 5, 15, 61, 183, 305, 915
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 909 and 915, than apply into the LCM equation.
GCF(909,915) = 3
LCM(909,915) = ( 909 × 915) / 3
LCM(909,915) = 831735 / 3
LCM(909,915) = 277245
(i) The LCM of 915 and 909 is associative
LCM of 909 and 915 = LCM of 915 and 909
1. What is the LCM of 909 and 915?
Answer: LCM of 909 and 915 is 277245.
2. What are the Factors of 909?
Answer: Factors of 909 are 1, 3, 9, 101, 303, 909. There are 6 integers that are factors of 909. The greatest factor of 909 is 909.
3. 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.
4. How to Find the LCM of 909 and 915?
Answer:
Least Common Multiple of 909 and 915 = 277245
Step 1: Find the prime factorization of 909
909 = 3 x 3 x 101
Step 2: Find the prime factorization of 915
915 = 3 x 5 x 61
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 277245 = 3 x 3 x 5 x 61 x 101
Step 4: Therefore, the least common multiple of 909 and 915 is 277245.