Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 112 and 115 the smallest integer that is 12880 that is divisible by both numbers.
Least Common Multiple (LCM) of 112 and 115 is 12880.
LCM(112,115) = 12880
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 112 and 115. First we will calculate the prime factors of 112 and 115.
Prime Factorization of 112
2 | 112 |
2 | 56 |
2 | 28 |
2 | 14 |
7 | 7 |
1 |
Prime factors of 112 are 2,7. Prime factorization of 112 in exponential form is:
112 = 24×71
Prime Factorization of 115
5 | 115 |
23 | 23 |
1 |
Prime factors of 115 are 5,23. Prime factorization of 115 in exponential form is:
115 = 51×231
Now multiplying the highest exponent prime factors to calculate the LCM of 112 and 115.
LCM(112,115) = 24×51×71×231
LCM(112,115) = 12880
Factors of 112
List of positive integer factors of 112 that divides 112 without a remainder.
1, 2, 4, 7, 8, 14, 16, 28, 56, 112
Factors of 115
List of positive integer factors of 115 that divides 115 without a remainder.
1, 5, 23, 115
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 112 and 115, than apply into the LCM equation.
GCF(112,115) = 1
LCM(112,115) = ( 112 × 115) / 1
LCM(112,115) = 12880 / 1
LCM(112,115) = 12880
(i) The LCM of 115 and 112 is associative
LCM of 112 and 115 = LCM of 115 and 112
1. What is the LCM of 112 and 115?
Answer: LCM of 112 and 115 is 12880.
2. What are the Factors of 112?
Answer: Factors of 112 are 1, 2, 4, 7, 8, 14, 16, 28, 56, 112. There are 10 integers that are factors of 112. The greatest factor of 112 is 112.
3. What are the Factors of 115?
Answer: Factors of 115 are 1, 5, 23, 115. There are 4 integers that are factors of 115. The greatest factor of 115 is 115.
4. How to Find the LCM of 112 and 115?
Answer:
Least Common Multiple of 112 and 115 = 12880
Step 1: Find the prime factorization of 112
112 = 2 x 2 x 2 x 2 x 7
Step 2: Find the prime factorization of 115
115 = 5 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 12880 = 2 x 2 x 2 x 2 x 5 x 7 x 23
Step 4: Therefore, the least common multiple of 112 and 115 is 12880.