Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1943 and 1946 the smallest integer that is 3781078 that is divisible by both numbers.
Least Common Multiple (LCM) of 1943 and 1946 is 3781078.
LCM(1943,1946) = 3781078
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 1943 and 1946. First we will calculate the prime factors of 1943 and 1946.
Prime Factorization of 1943
29 | 1943 |
67 | 67 |
1 |
Prime factors of 1943 are 29,67. Prime factorization of 1943 in exponential form is:
1943 = 291×671
Prime Factorization of 1946
2 | 1946 |
7 | 973 |
139 | 139 |
1 |
Prime factors of 1946 are 2, 7,139. Prime factorization of 1946 in exponential form is:
1946 = 21×71×1391
Now multiplying the highest exponent prime factors to calculate the LCM of 1943 and 1946.
LCM(1943,1946) = 21×71×291×671×1391
LCM(1943,1946) = 3781078
Factors of 1943
List of positive integer factors of 1943 that divides 1943 without a remainder.
1, 29, 67, 1943
Factors of 1946
List of positive integer factors of 1946 that divides 1946 without a remainder.
1, 2, 7, 14, 139, 278, 973, 1946
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1943 and 1946, than apply into the LCM equation.
GCF(1943,1946) = 1
LCM(1943,1946) = ( 1943 × 1946) / 1
LCM(1943,1946) = 3781078 / 1
LCM(1943,1946) = 3781078
(i) The LCM of 1946 and 1943 is associative
LCM of 1943 and 1946 = LCM of 1946 and 1943
1. What is the LCM of 1943 and 1946?
Answer: LCM of 1943 and 1946 is 3781078.
2. What are the Factors of 1943?
Answer: Factors of 1943 are 1, 29, 67, 1943. There are 4 integers that are factors of 1943. The greatest factor of 1943 is 1943.
3. What are the Factors of 1946?
Answer: Factors of 1946 are 1, 2, 7, 14, 139, 278, 973, 1946. There are 8 integers that are factors of 1946. The greatest factor of 1946 is 1946.
4. How to Find the LCM of 1943 and 1946?
Answer:
Least Common Multiple of 1943 and 1946 = 3781078
Step 1: Find the prime factorization of 1943
1943 = 29 x 67
Step 2: Find the prime factorization of 1946
1946 = 2 x 7 x 139
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3781078 = 2 x 7 x 29 x 67 x 139
Step 4: Therefore, the least common multiple of 1943 and 1946 is 3781078.