Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7942 and 7946 the smallest integer that is 31553566 that is divisible by both numbers.
Least Common Multiple (LCM) of 7942 and 7946 is 31553566.
LCM(7942,7946) = 31553566
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 7942 and 7946. First we will calculate the prime factors of 7942 and 7946.
Prime Factorization of 7942
2 | 7942 |
11 | 3971 |
19 | 361 |
19 | 19 |
1 |
Prime factors of 7942 are 2, 11,19. Prime factorization of 7942 in exponential form is:
7942 = 21×111×192
Prime Factorization of 7946
2 | 7946 |
29 | 3973 |
137 | 137 |
1 |
Prime factors of 7946 are 2, 29,137. Prime factorization of 7946 in exponential form is:
7946 = 21×291×1371
Now multiplying the highest exponent prime factors to calculate the LCM of 7942 and 7946.
LCM(7942,7946) = 21×111×192×291×1371
LCM(7942,7946) = 31553566
Factors of 7942
List of positive integer factors of 7942 that divides 7942 without a remainder.
1, 2, 11, 19, 22, 38, 209, 361, 418, 722, 3971, 7942
Factors of 7946
List of positive integer factors of 7946 that divides 7946 without a remainder.
1, 2, 29, 58, 137, 274, 3973, 7946
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7942 and 7946, than apply into the LCM equation.
GCF(7942,7946) = 2
LCM(7942,7946) = ( 7942 × 7946) / 2
LCM(7942,7946) = 63107132 / 2
LCM(7942,7946) = 31553566
(i) The LCM of 7946 and 7942 is associative
LCM of 7942 and 7946 = LCM of 7946 and 7942
1. What is the LCM of 7942 and 7946?
Answer: LCM of 7942 and 7946 is 31553566.
2. What are the Factors of 7942?
Answer: Factors of 7942 are 1, 2, 11, 19, 22, 38, 209, 361, 418, 722, 3971, 7942. There are 12 integers that are factors of 7942. The greatest factor of 7942 is 7942.
3. What are the Factors of 7946?
Answer: Factors of 7946 are 1, 2, 29, 58, 137, 274, 3973, 7946. There are 8 integers that are factors of 7946. The greatest factor of 7946 is 7946.
4. How to Find the LCM of 7942 and 7946?
Answer:
Least Common Multiple of 7942 and 7946 = 31553566
Step 1: Find the prime factorization of 7942
7942 = 2 x 11 x 19 x 19
Step 2: Find the prime factorization of 7946
7946 = 2 x 29 x 137
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31553566 = 2 x 11 x 19 x 19 x 29 x 137
Step 4: Therefore, the least common multiple of 7942 and 7946 is 31553566.