Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7881 and 7885 the smallest integer that is 62141685 that is divisible by both numbers.
Least Common Multiple (LCM) of 7881 and 7885 is 62141685.
LCM(7881,7885) = 62141685
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 7881 and 7885. First we will calculate the prime factors of 7881 and 7885.
Prime Factorization of 7881
3 | 7881 |
37 | 2627 |
71 | 71 |
1 |
Prime factors of 7881 are 3, 37,71. Prime factorization of 7881 in exponential form is:
7881 = 31×371×711
Prime Factorization of 7885
5 | 7885 |
19 | 1577 |
83 | 83 |
1 |
Prime factors of 7885 are 5, 19,83. Prime factorization of 7885 in exponential form is:
7885 = 51×191×831
Now multiplying the highest exponent prime factors to calculate the LCM of 7881 and 7885.
LCM(7881,7885) = 31×51×191×371×711×831
LCM(7881,7885) = 62141685
Factors of 7881
List of positive integer factors of 7881 that divides 7881 without a remainder.
1, 3, 37, 71, 111, 213, 2627, 7881
Factors of 7885
List of positive integer factors of 7885 that divides 7885 without a remainder.
1, 5, 19, 83, 95, 415, 1577, 7885
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7881 and 7885, than apply into the LCM equation.
GCF(7881,7885) = 1
LCM(7881,7885) = ( 7881 × 7885) / 1
LCM(7881,7885) = 62141685 / 1
LCM(7881,7885) = 62141685
(i) The LCM of 7885 and 7881 is associative
LCM of 7881 and 7885 = LCM of 7885 and 7881
1. What is the LCM of 7881 and 7885?
Answer: LCM of 7881 and 7885 is 62141685.
2. What are the Factors of 7881?
Answer: Factors of 7881 are 1, 3, 37, 71, 111, 213, 2627, 7881. There are 8 integers that are factors of 7881. The greatest factor of 7881 is 7881.
3. What are the Factors of 7885?
Answer: Factors of 7885 are 1, 5, 19, 83, 95, 415, 1577, 7885. There are 8 integers that are factors of 7885. The greatest factor of 7885 is 7885.
4. How to Find the LCM of 7881 and 7885?
Answer:
Least Common Multiple of 7881 and 7885 = 62141685
Step 1: Find the prime factorization of 7881
7881 = 3 x 37 x 71
Step 2: Find the prime factorization of 7885
7885 = 5 x 19 x 83
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 62141685 = 3 x 5 x 19 x 37 x 71 x 83
Step 4: Therefore, the least common multiple of 7881 and 7885 is 62141685.