Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1915 and 1919 the smallest integer that is 3674885 that is divisible by both numbers.
Least Common Multiple (LCM) of 1915 and 1919 is 3674885.
LCM(1915,1919) = 3674885
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 1915 and 1919. First we will calculate the prime factors of 1915 and 1919.
Prime Factorization of 1915
5 | 1915 |
383 | 383 |
1 |
Prime factors of 1915 are 5,383. Prime factorization of 1915 in exponential form is:
1915 = 51×3831
Prime Factorization of 1919
19 | 1919 |
101 | 101 |
1 |
Prime factors of 1919 are 19,101. Prime factorization of 1919 in exponential form is:
1919 = 191×1011
Now multiplying the highest exponent prime factors to calculate the LCM of 1915 and 1919.
LCM(1915,1919) = 51×191×1011×3831
LCM(1915,1919) = 3674885
Factors of 1915
List of positive integer factors of 1915 that divides 1915 without a remainder.
1, 5, 383, 1915
Factors of 1919
List of positive integer factors of 1919 that divides 1919 without a remainder.
1, 19, 101, 1919
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1915 and 1919, than apply into the LCM equation.
GCF(1915,1919) = 1
LCM(1915,1919) = ( 1915 × 1919) / 1
LCM(1915,1919) = 3674885 / 1
LCM(1915,1919) = 3674885
(i) The LCM of 1919 and 1915 is associative
LCM of 1915 and 1919 = LCM of 1919 and 1915
1. What is the LCM of 1915 and 1919?
Answer: LCM of 1915 and 1919 is 3674885.
2. What are the Factors of 1915?
Answer: Factors of 1915 are 1, 5, 383, 1915. There are 4 integers that are factors of 1915. The greatest factor of 1915 is 1915.
3. What are the Factors of 1919?
Answer: Factors of 1919 are 1, 19, 101, 1919. There are 4 integers that are factors of 1919. The greatest factor of 1919 is 1919.
4. How to Find the LCM of 1915 and 1919?
Answer:
Least Common Multiple of 1915 and 1919 = 3674885
Step 1: Find the prime factorization of 1915
1915 = 5 x 383
Step 2: Find the prime factorization of 1919
1919 = 19 x 101
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3674885 = 5 x 19 x 101 x 383
Step 4: Therefore, the least common multiple of 1915 and 1919 is 3674885.