Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1942 and 1947 the smallest integer that is 3781074 that is divisible by both numbers.
Least Common Multiple (LCM) of 1942 and 1947 is 3781074.
LCM(1942,1947) = 3781074
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 1942 and 1947. First we will calculate the prime factors of 1942 and 1947.
Prime Factorization of 1942
2 | 1942 |
971 | 971 |
1 |
Prime factors of 1942 are 2,971. Prime factorization of 1942 in exponential form is:
1942 = 21×9711
Prime Factorization of 1947
3 | 1947 |
11 | 649 |
59 | 59 |
1 |
Prime factors of 1947 are 3, 11,59. Prime factorization of 1947 in exponential form is:
1947 = 31×111×591
Now multiplying the highest exponent prime factors to calculate the LCM of 1942 and 1947.
LCM(1942,1947) = 21×31×111×591×9711
LCM(1942,1947) = 3781074
Factors of 1942
List of positive integer factors of 1942 that divides 1942 without a remainder.
1, 2, 971, 1942
Factors of 1947
List of positive integer factors of 1947 that divides 1947 without a remainder.
1, 3, 11, 33, 59, 177, 649, 1947
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1942 and 1947, than apply into the LCM equation.
GCF(1942,1947) = 1
LCM(1942,1947) = ( 1942 × 1947) / 1
LCM(1942,1947) = 3781074 / 1
LCM(1942,1947) = 3781074
(i) The LCM of 1947 and 1942 is associative
LCM of 1942 and 1947 = LCM of 1947 and 1942
1. What is the LCM of 1942 and 1947?
Answer: LCM of 1942 and 1947 is 3781074.
2. What are the Factors of 1942?
Answer: Factors of 1942 are 1, 2, 971, 1942. There are 4 integers that are factors of 1942. The greatest factor of 1942 is 1942.
3. What are the Factors of 1947?
Answer: Factors of 1947 are 1, 3, 11, 33, 59, 177, 649, 1947. There are 8 integers that are factors of 1947. The greatest factor of 1947 is 1947.
4. How to Find the LCM of 1942 and 1947?
Answer:
Least Common Multiple of 1942 and 1947 = 3781074
Step 1: Find the prime factorization of 1942
1942 = 2 x 971
Step 2: Find the prime factorization of 1947
1947 = 3 x 11 x 59
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3781074 = 2 x 3 x 11 x 59 x 971
Step 4: Therefore, the least common multiple of 1942 and 1947 is 3781074.