Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 6405 and 6406 the smallest integer that is 41030430 that is divisible by both numbers.
Least Common Multiple (LCM) of 6405 and 6406 is 41030430.
LCM(6405,6406) = 41030430
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 6405 and 6406. First we will calculate the prime factors of 6405 and 6406.
Prime Factorization of 6405
3 | 6405 |
5 | 2135 |
7 | 427 |
61 | 61 |
1 |
Prime factors of 6405 are 3, 5, 7,61. Prime factorization of 6405 in exponential form is:
6405 = 31×51×71×611
Prime Factorization of 6406
2 | 6406 |
3203 | 3203 |
1 |
Prime factors of 6406 are 2,3203. Prime factorization of 6406 in exponential form is:
6406 = 21×32031
Now multiplying the highest exponent prime factors to calculate the LCM of 6405 and 6406.
LCM(6405,6406) = 21×31×51×71×611×32031
LCM(6405,6406) = 41030430
Factors of 6405
List of positive integer factors of 6405 that divides 6405 without a remainder.
1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 6405
Factors of 6406
List of positive integer factors of 6406 that divides 6406 without a remainder.
1, 2, 3203, 6406
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6405 and 6406, than apply into the LCM equation.
GCF(6405,6406) = 1
LCM(6405,6406) = ( 6405 × 6406) / 1
LCM(6405,6406) = 41030430 / 1
LCM(6405,6406) = 41030430
(i) The LCM of 6406 and 6405 is associative
LCM of 6405 and 6406 = LCM of 6406 and 6405
1. What is the LCM of 6405 and 6406?
Answer: LCM of 6405 and 6406 is 41030430.
2. What are the Factors of 6405?
Answer: Factors of 6405 are 1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 6405. There are 16 integers that are factors of 6405. The greatest factor of 6405 is 6405.
3. What are the Factors of 6406?
Answer: Factors of 6406 are 1, 2, 3203, 6406. There are 4 integers that are factors of 6406. The greatest factor of 6406 is 6406.
4. How to Find the LCM of 6405 and 6406?
Answer:
Least Common Multiple of 6405 and 6406 = 41030430
Step 1: Find the prime factorization of 6405
6405 = 3 x 5 x 7 x 61
Step 2: Find the prime factorization of 6406
6406 = 2 x 3203
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 41030430 = 2 x 3 x 5 x 7 x 61 x 3203
Step 4: Therefore, the least common multiple of 6405 and 6406 is 41030430.