Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 80 and 83 the smallest integer that is 6640 that is divisible by both numbers.
Least Common Multiple (LCM) of 80 and 83 is 6640.
LCM(80,83) = 6640
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 80 and 83. First we will calculate the prime factors of 80 and 83.
Prime Factorization of 80
2 | 80 |
2 | 40 |
2 | 20 |
2 | 10 |
5 | 5 |
1 |
Prime factors of 80 are 2,5. Prime factorization of 80 in exponential form is:
80 = 24×51
Prime Factorization of 83
83 | 83 |
1 |
Prime factors of 83 are 83. Prime factorization of 83 in exponential form is:
83 = 831
Now multiplying the highest exponent prime factors to calculate the LCM of 80 and 83.
LCM(80,83) = 24×51×831
LCM(80,83) = 6640
Factors of 80
List of positive integer factors of 80 that divides 80 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 40, 80
Factors of 83
List of positive integer factors of 83 that divides 83 without a remainder.
1, 83
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 80 and 83, than apply into the LCM equation.
GCF(80,83) = 1
LCM(80,83) = ( 80 × 83) / 1
LCM(80,83) = 6640 / 1
LCM(80,83) = 6640
(i) The LCM of 83 and 80 is associative
LCM of 80 and 83 = LCM of 83 and 80
1. What is the LCM of 80 and 83?
Answer: LCM of 80 and 83 is 6640.
2. What are the Factors of 80?
Answer: Factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80. There are 10 integers that are factors of 80. The greatest factor of 80 is 80.
3. What are the Factors of 83?
Answer: Factors of 83 are 1, 83. There are 2 integers that are factors of 83. The greatest factor of 83 is 83.
4. How to Find the LCM of 80 and 83?
Answer:
Least Common Multiple of 80 and 83 = 6640
Step 1: Find the prime factorization of 80
80 = 2 x 2 x 2 x 2 x 5
Step 2: Find the prime factorization of 83
83 = 83
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 6640 = 2 x 2 x 2 x 2 x 5 x 83
Step 4: Therefore, the least common multiple of 80 and 83 is 6640.