Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 121 and 125 the smallest integer that is 15125 that is divisible by both numbers.
Least Common Multiple (LCM) of 121 and 125 is 15125.
LCM(121,125) = 15125
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 121 and 125. First we will calculate the prime factors of 121 and 125.
Prime Factorization of 121
11 | 121 |
11 | 11 |
1 |
Prime factors of 121 are 11. Prime factorization of 121 in exponential form is:
121 = 112
Prime Factorization of 125
5 | 125 |
5 | 25 |
5 | 5 |
1 |
Prime factors of 125 are 5. Prime factorization of 125 in exponential form is:
125 = 53
Now multiplying the highest exponent prime factors to calculate the LCM of 121 and 125.
LCM(121,125) = 53×112
LCM(121,125) = 15125
Factors of 121
List of positive integer factors of 121 that divides 121 without a remainder.
1, 11, 121
Factors of 125
List of positive integer factors of 125 that divides 125 without a remainder.
1, 5, 25, 125
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 121 and 125, than apply into the LCM equation.
GCF(121,125) = 1
LCM(121,125) = ( 121 × 125) / 1
LCM(121,125) = 15125 / 1
LCM(121,125) = 15125
(i) The LCM of 125 and 121 is associative
LCM of 121 and 125 = LCM of 125 and 121
1. What is the LCM of 121 and 125?
Answer: LCM of 121 and 125 is 15125.
2. What are the Factors of 121?
Answer: Factors of 121 are 1, 11, 121. There are 3 integers that are factors of 121. The greatest factor of 121 is 121.
3. What are the Factors of 125?
Answer: Factors of 125 are 1, 5, 25, 125. There are 4 integers that are factors of 125. The greatest factor of 125 is 125.
4. How to Find the LCM of 121 and 125?
Answer:
Least Common Multiple of 121 and 125 = 15125
Step 1: Find the prime factorization of 121
121 = 11 x 11
Step 2: Find the prime factorization of 125
125 = 5 x 5 x 5
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15125 = 5 x 5 x 5 x 11 x 11
Step 4: Therefore, the least common multiple of 121 and 125 is 15125.