Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7878 and 7886 the smallest integer that is 31062954 that is divisible by both numbers.
Least Common Multiple (LCM) of 7878 and 7886 is 31062954.
LCM(7878,7886) = 31062954
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 7878 and 7886. First we will calculate the prime factors of 7878 and 7886.
Prime Factorization of 7878
2 | 7878 |
3 | 3939 |
13 | 1313 |
101 | 101 |
1 |
Prime factors of 7878 are 2, 3, 13,101. Prime factorization of 7878 in exponential form is:
7878 = 21×31×131×1011
Prime Factorization of 7886
2 | 7886 |
3943 | 3943 |
1 |
Prime factors of 7886 are 2,3943. Prime factorization of 7886 in exponential form is:
7886 = 21×39431
Now multiplying the highest exponent prime factors to calculate the LCM of 7878 and 7886.
LCM(7878,7886) = 21×31×131×1011×39431
LCM(7878,7886) = 31062954
Factors of 7878
List of positive integer factors of 7878 that divides 7878 without a remainder.
1, 2, 3, 6, 13, 26, 39, 78, 101, 202, 303, 606, 1313, 2626, 3939, 7878
Factors of 7886
List of positive integer factors of 7886 that divides 7886 without a remainder.
1, 2, 3943, 7886
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7878 and 7886, than apply into the LCM equation.
GCF(7878,7886) = 2
LCM(7878,7886) = ( 7878 × 7886) / 2
LCM(7878,7886) = 62125908 / 2
LCM(7878,7886) = 31062954
(i) The LCM of 7886 and 7878 is associative
LCM of 7878 and 7886 = LCM of 7886 and 7878
1. What is the LCM of 7878 and 7886?
Answer: LCM of 7878 and 7886 is 31062954.
2. What are the Factors of 7878?
Answer: Factors of 7878 are 1, 2, 3, 6, 13, 26, 39, 78, 101, 202, 303, 606, 1313, 2626, 3939, 7878. There are 16 integers that are factors of 7878. The greatest factor of 7878 is 7878.
3. What are the Factors of 7886?
Answer: Factors of 7886 are 1, 2, 3943, 7886. There are 4 integers that are factors of 7886. The greatest factor of 7886 is 7886.
4. How to Find the LCM of 7878 and 7886?
Answer:
Least Common Multiple of 7878 and 7886 = 31062954
Step 1: Find the prime factorization of 7878
7878 = 2 x 3 x 13 x 101
Step 2: Find the prime factorization of 7886
7886 = 2 x 3943
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31062954 = 2 x 3 x 13 x 101 x 3943
Step 4: Therefore, the least common multiple of 7878 and 7886 is 31062954.