Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 649 and 654 the smallest integer that is 424446 that is divisible by both numbers.
Least Common Multiple (LCM) of 649 and 654 is 424446.
LCM(649,654) = 424446
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 649 and 654. First we will calculate the prime factors of 649 and 654.
Prime Factorization of 649
11 | 649 |
59 | 59 |
1 |
Prime factors of 649 are 11,59. Prime factorization of 649 in exponential form is:
649 = 111×591
Prime Factorization of 654
2 | 654 |
3 | 327 |
109 | 109 |
1 |
Prime factors of 654 are 2, 3,109. Prime factorization of 654 in exponential form is:
654 = 21×31×1091
Now multiplying the highest exponent prime factors to calculate the LCM of 649 and 654.
LCM(649,654) = 21×31×111×591×1091
LCM(649,654) = 424446
Factors of 649
List of positive integer factors of 649 that divides 649 without a remainder.
1, 11, 59, 649
Factors of 654
List of positive integer factors of 654 that divides 654 without a remainder.
1, 2, 3, 6, 109, 218, 327, 654
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 649 and 654, than apply into the LCM equation.
GCF(649,654) = 1
LCM(649,654) = ( 649 × 654) / 1
LCM(649,654) = 424446 / 1
LCM(649,654) = 424446
(i) The LCM of 654 and 649 is associative
LCM of 649 and 654 = LCM of 654 and 649
1. What is the LCM of 649 and 654?
Answer: LCM of 649 and 654 is 424446.
2. What are the Factors of 649?
Answer: Factors of 649 are 1, 11, 59, 649. There are 4 integers that are factors of 649. The greatest factor of 649 is 649.
3. What are the Factors of 654?
Answer: Factors of 654 are 1, 2, 3, 6, 109, 218, 327, 654. There are 8 integers that are factors of 654. The greatest factor of 654 is 654.
4. How to Find the LCM of 649 and 654?
Answer:
Least Common Multiple of 649 and 654 = 424446
Step 1: Find the prime factorization of 649
649 = 11 x 59
Step 2: Find the prime factorization of 654
654 = 2 x 3 x 109
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 424446 = 2 x 3 x 11 x 59 x 109
Step 4: Therefore, the least common multiple of 649 and 654 is 424446.