Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 655 and 657 the smallest integer that is 430335 that is divisible by both numbers.
Least Common Multiple (LCM) of 655 and 657 is 430335.
LCM(655,657) = 430335
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 655 and 657. First we will calculate the prime factors of 655 and 657.
Prime Factorization of 655
5 | 655 |
131 | 131 |
1 |
Prime factors of 655 are 5,131. Prime factorization of 655 in exponential form is:
655 = 51×1311
Prime Factorization of 657
3 | 657 |
3 | 219 |
73 | 73 |
1 |
Prime factors of 657 are 3,73. Prime factorization of 657 in exponential form is:
657 = 32×731
Now multiplying the highest exponent prime factors to calculate the LCM of 655 and 657.
LCM(655,657) = 32×51×731×1311
LCM(655,657) = 430335
Factors of 655
List of positive integer factors of 655 that divides 655 without a remainder.
1, 5, 131, 655
Factors of 657
List of positive integer factors of 657 that divides 657 without a remainder.
1, 3, 9, 73, 219, 657
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 655 and 657, than apply into the LCM equation.
GCF(655,657) = 1
LCM(655,657) = ( 655 × 657) / 1
LCM(655,657) = 430335 / 1
LCM(655,657) = 430335
(i) The LCM of 657 and 655 is associative
LCM of 655 and 657 = LCM of 657 and 655
1. What is the LCM of 655 and 657?
Answer: LCM of 655 and 657 is 430335.
2. What are the Factors of 655?
Answer: Factors of 655 are 1, 5, 131, 655. There are 4 integers that are factors of 655. The greatest factor of 655 is 655.
3. What are the Factors of 657?
Answer: Factors of 657 are 1, 3, 9, 73, 219, 657. There are 6 integers that are factors of 657. The greatest factor of 657 is 657.
4. How to Find the LCM of 655 and 657?
Answer:
Least Common Multiple of 655 and 657 = 430335
Step 1: Find the prime factorization of 655
655 = 5 x 131
Step 2: Find the prime factorization of 657
657 = 3 x 3 x 73
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 430335 = 3 x 3 x 5 x 73 x 131
Step 4: Therefore, the least common multiple of 655 and 657 is 430335.