Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 122 and 130 the smallest integer that is 7930 that is divisible by both numbers.
Least Common Multiple (LCM) of 122 and 130 is 7930.
LCM(122,130) = 7930
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 122 and 130. First we will calculate the prime factors of 122 and 130.
Prime Factorization of 122
2 | 122 |
61 | 61 |
1 |
Prime factors of 122 are 2,61. Prime factorization of 122 in exponential form is:
122 = 21×611
Prime Factorization of 130
2 | 130 |
5 | 65 |
13 | 13 |
1 |
Prime factors of 130 are 2, 5,13. Prime factorization of 130 in exponential form is:
130 = 21×51×131
Now multiplying the highest exponent prime factors to calculate the LCM of 122 and 130.
LCM(122,130) = 21×51×131×611
LCM(122,130) = 7930
Factors of 122
List of positive integer factors of 122 that divides 122 without a remainder.
1, 2, 61, 122
Factors of 130
List of positive integer factors of 130 that divides 130 without a remainder.
1, 2, 5, 10, 13, 26, 65, 130
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 122 and 130, than apply into the LCM equation.
GCF(122,130) = 2
LCM(122,130) = ( 122 × 130) / 2
LCM(122,130) = 15860 / 2
LCM(122,130) = 7930
(i) The LCM of 130 and 122 is associative
LCM of 122 and 130 = LCM of 130 and 122
1. What is the LCM of 122 and 130?
Answer: LCM of 122 and 130 is 7930.
2. What are the Factors of 122?
Answer: Factors of 122 are 1, 2, 61, 122. There are 4 integers that are factors of 122. The greatest factor of 122 is 122.
3. What are the Factors of 130?
Answer: Factors of 130 are 1, 2, 5, 10, 13, 26, 65, 130. There are 8 integers that are factors of 130. The greatest factor of 130 is 130.
4. How to Find the LCM of 122 and 130?
Answer:
Least Common Multiple of 122 and 130 = 7930
Step 1: Find the prime factorization of 122
122 = 2 x 61
Step 2: Find the prime factorization of 130
130 = 2 x 5 x 13
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7930 = 2 x 5 x 13 x 61
Step 4: Therefore, the least common multiple of 122 and 130 is 7930.