Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 6715 and 6720 the smallest integer that is 9024960 that is divisible by both numbers.
Least Common Multiple (LCM) of 6715 and 6720 is 9024960.
LCM(6715,6720) = 9024960
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 6715 and 6720. First we will calculate the prime factors of 6715 and 6720.
Prime Factorization of 6715
5 | 6715 |
17 | 1343 |
79 | 79 |
1 |
Prime factors of 6715 are 5, 17,79. Prime factorization of 6715 in exponential form is:
6715 = 51×171×791
Prime Factorization of 6720
2 | 6720 |
2 | 3360 |
2 | 1680 |
2 | 840 |
2 | 420 |
2 | 210 |
3 | 105 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 6720 are 2, 3, 5,7. Prime factorization of 6720 in exponential form is:
6720 = 26×31×51×71
Now multiplying the highest exponent prime factors to calculate the LCM of 6715 and 6720.
LCM(6715,6720) = 26×31×51×71×171×791
LCM(6715,6720) = 9024960
Factors of 6715
List of positive integer factors of 6715 that divides 6715 without a remainder.
1, 5, 17, 79, 85, 395, 1343, 6715
Factors of 6720
List of positive integer factors of 6720 that divides 6720 without a remainder.
1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 420, 448, 480, 560, 672, 840, 960, 1120, 1344, 1680, 2240, 3360, 6720
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6715 and 6720, than apply into the LCM equation.
GCF(6715,6720) = 5
LCM(6715,6720) = ( 6715 × 6720) / 5
LCM(6715,6720) = 45124800 / 5
LCM(6715,6720) = 9024960
(i) The LCM of 6720 and 6715 is associative
LCM of 6715 and 6720 = LCM of 6720 and 6715
1. What is the LCM of 6715 and 6720?
Answer: LCM of 6715 and 6720 is 9024960.
2. What are the Factors of 6715?
Answer: Factors of 6715 are 1, 5, 17, 79, 85, 395, 1343, 6715. There are 8 integers that are factors of 6715. The greatest factor of 6715 is 6715.
3. What are the Factors of 6720?
Answer: Factors of 6720 are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 420, 448, 480, 560, 672, 840, 960, 1120, 1344, 1680, 2240, 3360, 6720. There are 56 integers that are factors of 6720. The greatest factor of 6720 is 6720.
4. How to Find the LCM of 6715 and 6720?
Answer:
Least Common Multiple of 6715 and 6720 = 9024960
Step 1: Find the prime factorization of 6715
6715 = 5 x 17 x 79
Step 2: Find the prime factorization of 6720
6720 = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 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 = 9024960 = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 7 x 17 x 79
Step 4: Therefore, the least common multiple of 6715 and 6720 is 9024960.