Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 556 and 558 the smallest integer that is 155124 that is divisible by both numbers.
Least Common Multiple (LCM) of 556 and 558 is 155124.
LCM(556,558) = 155124
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 556 and 558. First we will calculate the prime factors of 556 and 558.
Prime Factorization of 556
2 | 556 |
2 | 278 |
139 | 139 |
1 |
Prime factors of 556 are 2,139. Prime factorization of 556 in exponential form is:
556 = 22×1391
Prime Factorization of 558
2 | 558 |
3 | 279 |
3 | 93 |
31 | 31 |
1 |
Prime factors of 558 are 2, 3,31. Prime factorization of 558 in exponential form is:
558 = 21×32×311
Now multiplying the highest exponent prime factors to calculate the LCM of 556 and 558.
LCM(556,558) = 22×32×311×1391
LCM(556,558) = 155124
Factors of 556
List of positive integer factors of 556 that divides 556 without a remainder.
1, 2, 4, 139, 278, 556
Factors of 558
List of positive integer factors of 558 that divides 558 without a remainder.
1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 556 and 558, than apply into the LCM equation.
GCF(556,558) = 2
LCM(556,558) = ( 556 × 558) / 2
LCM(556,558) = 310248 / 2
LCM(556,558) = 155124
(i) The LCM of 558 and 556 is associative
LCM of 556 and 558 = LCM of 558 and 556
1. What is the LCM of 556 and 558?
Answer: LCM of 556 and 558 is 155124.
2. What are the Factors of 556?
Answer: Factors of 556 are 1, 2, 4, 139, 278, 556. There are 6 integers that are factors of 556. The greatest factor of 556 is 556.
3. What are the Factors of 558?
Answer: Factors of 558 are 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558. There are 12 integers that are factors of 558. The greatest factor of 558 is 558.
4. How to Find the LCM of 556 and 558?
Answer:
Least Common Multiple of 556 and 558 = 155124
Step 1: Find the prime factorization of 556
556 = 2 x 2 x 139
Step 2: Find the prime factorization of 558
558 = 2 x 3 x 3 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 = 155124 = 2 x 2 x 3 x 3 x 31 x 139
Step 4: Therefore, the least common multiple of 556 and 558 is 155124.