Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1909 and 1916 the smallest integer that is 3657644 that is divisible by both numbers.
Least Common Multiple (LCM) of 1909 and 1916 is 3657644.
LCM(1909,1916) = 3657644
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 1909 and 1916. First we will calculate the prime factors of 1909 and 1916.
Prime Factorization of 1909
23 | 1909 |
83 | 83 |
1 |
Prime factors of 1909 are 23,83. Prime factorization of 1909 in exponential form is:
1909 = 231×831
Prime Factorization of 1916
2 | 1916 |
2 | 958 |
479 | 479 |
1 |
Prime factors of 1916 are 2,479. Prime factorization of 1916 in exponential form is:
1916 = 22×4791
Now multiplying the highest exponent prime factors to calculate the LCM of 1909 and 1916.
LCM(1909,1916) = 22×231×831×4791
LCM(1909,1916) = 3657644
Factors of 1909
List of positive integer factors of 1909 that divides 1909 without a remainder.
1, 23, 83, 1909
Factors of 1916
List of positive integer factors of 1916 that divides 1916 without a remainder.
1, 2, 4, 479, 958, 1916
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1909 and 1916, than apply into the LCM equation.
GCF(1909,1916) = 1
LCM(1909,1916) = ( 1909 × 1916) / 1
LCM(1909,1916) = 3657644 / 1
LCM(1909,1916) = 3657644
(i) The LCM of 1916 and 1909 is associative
LCM of 1909 and 1916 = LCM of 1916 and 1909
1. What is the LCM of 1909 and 1916?
Answer: LCM of 1909 and 1916 is 3657644.
2. What are the Factors of 1909?
Answer: Factors of 1909 are 1, 23, 83, 1909. There are 4 integers that are factors of 1909. The greatest factor of 1909 is 1909.
3. What are the Factors of 1916?
Answer: Factors of 1916 are 1, 2, 4, 479, 958, 1916. There are 6 integers that are factors of 1916. The greatest factor of 1916 is 1916.
4. How to Find the LCM of 1909 and 1916?
Answer:
Least Common Multiple of 1909 and 1916 = 3657644
Step 1: Find the prime factorization of 1909
1909 = 23 x 83
Step 2: Find the prime factorization of 1916
1916 = 2 x 2 x 479
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3657644 = 2 x 2 x 23 x 83 x 479
Step 4: Therefore, the least common multiple of 1909 and 1916 is 3657644.