Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1918 and 1922 the smallest integer that is 1843198 that is divisible by both numbers.
Least Common Multiple (LCM) of 1918 and 1922 is 1843198.
LCM(1918,1922) = 1843198
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 1918 and 1922. First we will calculate the prime factors of 1918 and 1922.
Prime Factorization of 1918
2 | 1918 |
7 | 959 |
137 | 137 |
1 |
Prime factors of 1918 are 2, 7,137. Prime factorization of 1918 in exponential form is:
1918 = 21×71×1371
Prime Factorization of 1922
2 | 1922 |
31 | 961 |
31 | 31 |
1 |
Prime factors of 1922 are 2,31. Prime factorization of 1922 in exponential form is:
1922 = 21×312
Now multiplying the highest exponent prime factors to calculate the LCM of 1918 and 1922.
LCM(1918,1922) = 21×71×312×1371
LCM(1918,1922) = 1843198
Factors of 1918
List of positive integer factors of 1918 that divides 1918 without a remainder.
1, 2, 7, 14, 137, 274, 959, 1918
Factors of 1922
List of positive integer factors of 1922 that divides 1922 without a remainder.
1, 2, 31, 62, 961, 1922
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1918 and 1922, than apply into the LCM equation.
GCF(1918,1922) = 2
LCM(1918,1922) = ( 1918 × 1922) / 2
LCM(1918,1922) = 3686396 / 2
LCM(1918,1922) = 1843198
(i) The LCM of 1922 and 1918 is associative
LCM of 1918 and 1922 = LCM of 1922 and 1918
1. What is the LCM of 1918 and 1922?
Answer: LCM of 1918 and 1922 is 1843198.
2. What are the Factors of 1918?
Answer: Factors of 1918 are 1, 2, 7, 14, 137, 274, 959, 1918. There are 8 integers that are factors of 1918. The greatest factor of 1918 is 1918.
3. What are the Factors of 1922?
Answer: Factors of 1922 are 1, 2, 31, 62, 961, 1922. There are 6 integers that are factors of 1922. The greatest factor of 1922 is 1922.
4. How to Find the LCM of 1918 and 1922?
Answer:
Least Common Multiple of 1918 and 1922 = 1843198
Step 1: Find the prime factorization of 1918
1918 = 2 x 7 x 137
Step 2: Find the prime factorization of 1922
1922 = 2 x 31 x 31
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1843198 = 2 x 7 x 31 x 31 x 137
Step 4: Therefore, the least common multiple of 1918 and 1922 is 1843198.