Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1911 and 1919 the smallest integer that is 3667209 that is divisible by both numbers.
Least Common Multiple (LCM) of 1911 and 1919 is 3667209.
LCM(1911,1919) = 3667209
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 1911 and 1919. First we will calculate the prime factors of 1911 and 1919.
Prime Factorization of 1911
3 | 1911 |
7 | 637 |
7 | 91 |
13 | 13 |
1 |
Prime factors of 1911 are 3, 7,13. Prime factorization of 1911 in exponential form is:
1911 = 31×72×131
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 1911 and 1919.
LCM(1911,1919) = 31×72×131×191×1011
LCM(1911,1919) = 3667209
Factors of 1911
List of positive integer factors of 1911 that divides 1911 without a remainder.
1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911
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 1911 and 1919, than apply into the LCM equation.
GCF(1911,1919) = 1
LCM(1911,1919) = ( 1911 × 1919) / 1
LCM(1911,1919) = 3667209 / 1
LCM(1911,1919) = 3667209
(i) The LCM of 1919 and 1911 is associative
LCM of 1911 and 1919 = LCM of 1919 and 1911
1. What is the LCM of 1911 and 1919?
Answer: LCM of 1911 and 1919 is 3667209.
2. What are the Factors of 1911?
Answer: Factors of 1911 are 1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911. There are 12 integers that are factors of 1911. The greatest factor of 1911 is 1911.
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 1911 and 1919?
Answer:
Least Common Multiple of 1911 and 1919 = 3667209
Step 1: Find the prime factorization of 1911
1911 = 3 x 7 x 7 x 13
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 = 3667209 = 3 x 7 x 7 x 13 x 19 x 101
Step 4: Therefore, the least common multiple of 1911 and 1919 is 3667209.