Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 658 and 665 the smallest integer that is 62510 that is divisible by both numbers.
Least Common Multiple (LCM) of 658 and 665 is 62510.
LCM(658,665) = 62510
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 658 and 665. First we will calculate the prime factors of 658 and 665.
Prime Factorization of 658
2 | 658 |
7 | 329 |
47 | 47 |
1 |
Prime factors of 658 are 2, 7,47. Prime factorization of 658 in exponential form is:
658 = 21×71×471
Prime Factorization of 665
5 | 665 |
7 | 133 |
19 | 19 |
1 |
Prime factors of 665 are 5, 7,19. Prime factorization of 665 in exponential form is:
665 = 51×71×191
Now multiplying the highest exponent prime factors to calculate the LCM of 658 and 665.
LCM(658,665) = 21×51×71×191×471
LCM(658,665) = 62510
Factors of 658
List of positive integer factors of 658 that divides 658 without a remainder.
1, 2, 7, 14, 47, 94, 329, 658
Factors of 665
List of positive integer factors of 665 that divides 665 without a remainder.
1, 5, 7, 19, 35, 95, 133, 665
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 658 and 665, than apply into the LCM equation.
GCF(658,665) = 7
LCM(658,665) = ( 658 × 665) / 7
LCM(658,665) = 437570 / 7
LCM(658,665) = 62510
(i) The LCM of 665 and 658 is associative
LCM of 658 and 665 = LCM of 665 and 658
1. What is the LCM of 658 and 665?
Answer: LCM of 658 and 665 is 62510.
2. What are the Factors of 658?
Answer: Factors of 658 are 1, 2, 7, 14, 47, 94, 329, 658. There are 8 integers that are factors of 658. The greatest factor of 658 is 658.
3. What are the Factors of 665?
Answer: Factors of 665 are 1, 5, 7, 19, 35, 95, 133, 665. There are 8 integers that are factors of 665. The greatest factor of 665 is 665.
4. How to Find the LCM of 658 and 665?
Answer:
Least Common Multiple of 658 and 665 = 62510
Step 1: Find the prime factorization of 658
658 = 2 x 7 x 47
Step 2: Find the prime factorization of 665
665 = 5 x 7 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 62510 = 2 x 5 x 7 x 19 x 47
Step 4: Therefore, the least common multiple of 658 and 665 is 62510.