Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 140 and 148 the smallest integer that is 5180 that is divisible by both numbers.
Least Common Multiple (LCM) of 140 and 148 is 5180.
LCM(140,148) = 5180
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 140 and 148. First we will calculate the prime factors of 140 and 148.
Prime Factorization of 140
2 | 140 |
2 | 70 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 140 are 2, 5,7. Prime factorization of 140 in exponential form is:
140 = 22×51×71
Prime Factorization of 148
2 | 148 |
2 | 74 |
37 | 37 |
1 |
Prime factors of 148 are 2,37. Prime factorization of 148 in exponential form is:
148 = 22×371
Now multiplying the highest exponent prime factors to calculate the LCM of 140 and 148.
LCM(140,148) = 22×51×71×371
LCM(140,148) = 5180
Factors of 140
List of positive integer factors of 140 that divides 140 without a remainder.
1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
Factors of 148
List of positive integer factors of 148 that divides 148 without a remainder.
1, 2, 4, 37, 74, 148
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 140 and 148, than apply into the LCM equation.
GCF(140,148) = 4
LCM(140,148) = ( 140 × 148) / 4
LCM(140,148) = 20720 / 4
LCM(140,148) = 5180
(i) The LCM of 148 and 140 is associative
LCM of 140 and 148 = LCM of 148 and 140
1. What is the LCM of 140 and 148?
Answer: LCM of 140 and 148 is 5180.
2. What are the Factors of 140?
Answer: Factors of 140 are 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140. There are 12 integers that are factors of 140. The greatest factor of 140 is 140.
3. What are the Factors of 148?
Answer: Factors of 148 are 1, 2, 4, 37, 74, 148. There are 6 integers that are factors of 148. The greatest factor of 148 is 148.
4. How to Find the LCM of 140 and 148?
Answer:
Least Common Multiple of 140 and 148 = 5180
Step 1: Find the prime factorization of 140
140 = 2 x 2 x 5 x 7
Step 2: Find the prime factorization of 148
148 = 2 x 2 x 37
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 5180 = 2 x 2 x 5 x 7 x 37
Step 4: Therefore, the least common multiple of 140 and 148 is 5180.