Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1112 and 1120 the smallest integer that is 155680 that is divisible by both numbers.
Least Common Multiple (LCM) of 1112 and 1120 is 155680.
LCM(1112,1120) = 155680
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 1112 and 1120. First we will calculate the prime factors of 1112 and 1120.
Prime Factorization of 1112
2 | 1112 |
2 | 556 |
2 | 278 |
139 | 139 |
1 |
Prime factors of 1112 are 2,139. Prime factorization of 1112 in exponential form is:
1112 = 23×1391
Prime Factorization of 1120
2 | 1120 |
2 | 560 |
2 | 280 |
2 | 140 |
2 | 70 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 1120 are 2, 5,7. Prime factorization of 1120 in exponential form is:
1120 = 25×51×71
Now multiplying the highest exponent prime factors to calculate the LCM of 1112 and 1120.
LCM(1112,1120) = 25×51×71×1391
LCM(1112,1120) = 155680
Factors of 1112
List of positive integer factors of 1112 that divides 1112 without a remainder.
1, 2, 4, 8, 139, 278, 556, 1112
Factors of 1120
List of positive integer factors of 1120 that divides 1120 without a remainder.
1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1112 and 1120, than apply into the LCM equation.
GCF(1112,1120) = 8
LCM(1112,1120) = ( 1112 × 1120) / 8
LCM(1112,1120) = 1245440 / 8
LCM(1112,1120) = 155680
(i) The LCM of 1120 and 1112 is associative
LCM of 1112 and 1120 = LCM of 1120 and 1112
1. What is the LCM of 1112 and 1120?
Answer: LCM of 1112 and 1120 is 155680.
2. What are the Factors of 1112?
Answer: Factors of 1112 are 1, 2, 4, 8, 139, 278, 556, 1112. There are 8 integers that are factors of 1112. The greatest factor of 1112 is 1112.
3. What are the Factors of 1120?
Answer: Factors of 1120 are 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120. There are 24 integers that are factors of 1120. The greatest factor of 1120 is 1120.
4. How to Find the LCM of 1112 and 1120?
Answer:
Least Common Multiple of 1112 and 1120 = 155680
Step 1: Find the prime factorization of 1112
1112 = 2 x 2 x 2 x 139
Step 2: Find the prime factorization of 1120
1120 = 2 x 2 x 2 x 2 x 2 x 5 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 155680 = 2 x 2 x 2 x 2 x 2 x 5 x 7 x 139
Step 4: Therefore, the least common multiple of 1112 and 1120 is 155680.