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 124 the smallest integer that is 7564 that is divisible by both numbers.
Least Common Multiple (LCM) of 122 and 124 is 7564.
LCM(122,124) = 7564
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 124. First we will calculate the prime factors of 122 and 124.
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 124
2 | 124 |
2 | 62 |
31 | 31 |
1 |
Prime factors of 124 are 2,31. Prime factorization of 124 in exponential form is:
124 = 22×311
Now multiplying the highest exponent prime factors to calculate the LCM of 122 and 124.
LCM(122,124) = 22×311×611
LCM(122,124) = 7564
Factors of 122
List of positive integer factors of 122 that divides 122 without a remainder.
1, 2, 61, 122
Factors of 124
List of positive integer factors of 124 that divides 124 without a remainder.
1, 2, 4, 31, 62, 124
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 122 and 124, than apply into the LCM equation.
GCF(122,124) = 2
LCM(122,124) = ( 122 × 124) / 2
LCM(122,124) = 15128 / 2
LCM(122,124) = 7564
(i) The LCM of 124 and 122 is associative
LCM of 122 and 124 = LCM of 124 and 122
1. What is the LCM of 122 and 124?
Answer: LCM of 122 and 124 is 7564.
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 124?
Answer: Factors of 124 are 1, 2, 4, 31, 62, 124. There are 6 integers that are factors of 124. The greatest factor of 124 is 124.
4. How to Find the LCM of 122 and 124?
Answer:
Least Common Multiple of 122 and 124 = 7564
Step 1: Find the prime factorization of 122
122 = 2 x 61
Step 2: Find the prime factorization of 124
124 = 2 x 2 x 31
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7564 = 2 x 2 x 31 x 61
Step 4: Therefore, the least common multiple of 122 and 124 is 7564.