Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 671 and 672 the smallest integer that is 450912 that is divisible by both numbers.
Least Common Multiple (LCM) of 671 and 672 is 450912.
LCM(671,672) = 450912
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 671 and 672. First we will calculate the prime factors of 671 and 672.
Prime Factorization of 671
11 | 671 |
61 | 61 |
1 |
Prime factors of 671 are 11,61. Prime factorization of 671 in exponential form is:
671 = 111×611
Prime Factorization of 672
2 | 672 |
2 | 336 |
2 | 168 |
2 | 84 |
2 | 42 |
3 | 21 |
7 | 7 |
1 |
Prime factors of 672 are 2, 3,7. Prime factorization of 672 in exponential form is:
672 = 25×31×71
Now multiplying the highest exponent prime factors to calculate the LCM of 671 and 672.
LCM(671,672) = 25×31×71×111×611
LCM(671,672) = 450912
Factors of 671
List of positive integer factors of 671 that divides 671 without a remainder.
1, 11, 61, 671
Factors of 672
List of positive integer factors of 672 that divides 672 without a remainder.
1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 671 and 672, than apply into the LCM equation.
GCF(671,672) = 1
LCM(671,672) = ( 671 × 672) / 1
LCM(671,672) = 450912 / 1
LCM(671,672) = 450912
(i) The LCM of 672 and 671 is associative
LCM of 671 and 672 = LCM of 672 and 671
1. What is the LCM of 671 and 672?
Answer: LCM of 671 and 672 is 450912.
2. What are the Factors of 671?
Answer: Factors of 671 are 1, 11, 61, 671. There are 4 integers that are factors of 671. The greatest factor of 671 is 671.
3. What are the Factors of 672?
Answer: Factors of 672 are 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672. There are 24 integers that are factors of 672. The greatest factor of 672 is 672.
4. How to Find the LCM of 671 and 672?
Answer:
Least Common Multiple of 671 and 672 = 450912
Step 1: Find the prime factorization of 671
671 = 11 x 61
Step 2: Find the prime factorization of 672
672 = 2 x 2 x 2 x 2 x 2 x 3 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 450912 = 2 x 2 x 2 x 2 x 2 x 3 x 7 x 11 x 61
Step 4: Therefore, the least common multiple of 671 and 672 is 450912.