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 1924 the smallest integer that is 3696004 that is divisible by both numbers.
Least Common Multiple (LCM) of 1921 and 1924 is 3696004.
LCM(1921,1924) = 3696004
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 1924. First we will calculate the prime factors of 1921 and 1924.
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 1924
2 | 1924 |
2 | 962 |
13 | 481 |
37 | 37 |
1 |
Prime factors of 1924 are 2, 13,37. Prime factorization of 1924 in exponential form is:
1924 = 22×131×371
Now multiplying the highest exponent prime factors to calculate the LCM of 1921 and 1924.
LCM(1921,1924) = 22×131×171×371×1131
LCM(1921,1924) = 3696004
Factors of 1921
List of positive integer factors of 1921 that divides 1921 without a remainder.
1, 17, 113, 1921
Factors of 1924
List of positive integer factors of 1924 that divides 1924 without a remainder.
1, 2, 4, 13, 26, 37, 52, 74, 148, 481, 962, 1924
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1921 and 1924, than apply into the LCM equation.
GCF(1921,1924) = 1
LCM(1921,1924) = ( 1921 × 1924) / 1
LCM(1921,1924) = 3696004 / 1
LCM(1921,1924) = 3696004
(i) The LCM of 1924 and 1921 is associative
LCM of 1921 and 1924 = LCM of 1924 and 1921
1. What is the LCM of 1921 and 1924?
Answer: LCM of 1921 and 1924 is 3696004.
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 1924?
Answer: Factors of 1924 are 1, 2, 4, 13, 26, 37, 52, 74, 148, 481, 962, 1924. There are 12 integers that are factors of 1924. The greatest factor of 1924 is 1924.
4. How to Find the LCM of 1921 and 1924?
Answer:
Least Common Multiple of 1921 and 1924 = 3696004
Step 1: Find the prime factorization of 1921
1921 = 17 x 113
Step 2: Find the prime factorization of 1924
1924 = 2 x 2 x 13 x 37
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3696004 = 2 x 2 x 13 x 17 x 37 x 113
Step 4: Therefore, the least common multiple of 1921 and 1924 is 3696004.