Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1921 and 1923 the smallest integer that is 3694083 that is divisible by both numbers.
Least Common Multiple (LCM) of 1921 and 1923 is 3694083.
LCM(1921,1923) = 3694083
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 1921 and 1923. First we will calculate the prime factors of 1921 and 1923.
Prime Factorization of 1921
17 | 1921 |
113 | 113 |
1 |
Prime factors of 1921 are 17,113. Prime factorization of 1921 in exponential form is:
1921 = 171×1131
Prime Factorization of 1923
3 | 1923 |
641 | 641 |
1 |
Prime factors of 1923 are 3,641. Prime factorization of 1923 in exponential form is:
1923 = 31×6411
Now multiplying the highest exponent prime factors to calculate the LCM of 1921 and 1923.
LCM(1921,1923) = 31×171×1131×6411
LCM(1921,1923) = 3694083
Factors of 1921
List of positive integer factors of 1921 that divides 1921 without a remainder.
1, 17, 113, 1921
Factors of 1923
List of positive integer factors of 1923 that divides 1923 without a remainder.
1, 3, 641, 1923
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1921 and 1923, than apply into the LCM equation.
GCF(1921,1923) = 1
LCM(1921,1923) = ( 1921 × 1923) / 1
LCM(1921,1923) = 3694083 / 1
LCM(1921,1923) = 3694083
(i) The LCM of 1923 and 1921 is associative
LCM of 1921 and 1923 = LCM of 1923 and 1921
1. What is the LCM of 1921 and 1923?
Answer: LCM of 1921 and 1923 is 3694083.
2. What are the Factors of 1921?
Answer: Factors of 1921 are 1, 17, 113, 1921. There are 4 integers that are factors of 1921. The greatest factor of 1921 is 1921.
3. What are the Factors of 1923?
Answer: Factors of 1923 are 1, 3, 641, 1923. There are 4 integers that are factors of 1923. The greatest factor of 1923 is 1923.
4. How to Find the LCM of 1921 and 1923?
Answer:
Least Common Multiple of 1921 and 1923 = 3694083
Step 1: Find the prime factorization of 1921
1921 = 17 x 113
Step 2: Find the prime factorization of 1923
1923 = 3 x 641
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3694083 = 3 x 17 x 113 x 641
Step 4: Therefore, the least common multiple of 1921 and 1923 is 3694083.