Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7861 and 7868 the smallest integer that is 8835764 that is divisible by both numbers.
Least Common Multiple (LCM) of 7861 and 7868 is 8835764.
LCM(7861,7868) = 8835764
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 7861 and 7868. First we will calculate the prime factors of 7861 and 7868.
Prime Factorization of 7861
7 | 7861 |
1123 | 1123 |
1 |
Prime factors of 7861 are 7,1123. Prime factorization of 7861 in exponential form is:
7861 = 71×11231
Prime Factorization of 7868
2 | 7868 |
2 | 3934 |
7 | 1967 |
281 | 281 |
1 |
Prime factors of 7868 are 2, 7,281. Prime factorization of 7868 in exponential form is:
7868 = 22×71×2811
Now multiplying the highest exponent prime factors to calculate the LCM of 7861 and 7868.
LCM(7861,7868) = 22×71×2811×11231
LCM(7861,7868) = 8835764
Factors of 7861
List of positive integer factors of 7861 that divides 7861 without a remainder.
1, 7, 1123, 7861
Factors of 7868
List of positive integer factors of 7868 that divides 7868 without a remainder.
1, 2, 4, 7, 14, 28, 281, 562, 1124, 1967, 3934, 7868
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7861 and 7868, than apply into the LCM equation.
GCF(7861,7868) = 7
LCM(7861,7868) = ( 7861 × 7868) / 7
LCM(7861,7868) = 61850348 / 7
LCM(7861,7868) = 8835764
(i) The LCM of 7868 and 7861 is associative
LCM of 7861 and 7868 = LCM of 7868 and 7861
1. What is the LCM of 7861 and 7868?
Answer: LCM of 7861 and 7868 is 8835764.
2. What are the Factors of 7861?
Answer: Factors of 7861 are 1, 7, 1123, 7861. There are 4 integers that are factors of 7861. The greatest factor of 7861 is 7861.
3. What are the Factors of 7868?
Answer: Factors of 7868 are 1, 2, 4, 7, 14, 28, 281, 562, 1124, 1967, 3934, 7868. There are 12 integers that are factors of 7868. The greatest factor of 7868 is 7868.
4. How to Find the LCM of 7861 and 7868?
Answer:
Least Common Multiple of 7861 and 7868 = 8835764
Step 1: Find the prime factorization of 7861
7861 = 7 x 1123
Step 2: Find the prime factorization of 7868
7868 = 2 x 2 x 7 x 281
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 8835764 = 2 x 2 x 7 x 281 x 1123
Step 4: Therefore, the least common multiple of 7861 and 7868 is 8835764.