Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 404 and 409 the smallest integer that is 165236 that is divisible by both numbers.
Least Common Multiple (LCM) of 404 and 409 is 165236.
LCM(404,409) = 165236
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 404 and 409. First we will calculate the prime factors of 404 and 409.
Prime Factorization of 404
2 | 404 |
2 | 202 |
101 | 101 |
1 |
Prime factors of 404 are 2,101. Prime factorization of 404 in exponential form is:
404 = 22×1011
Prime Factorization of 409
409 | 409 |
1 |
Prime factors of 409 are 409. Prime factorization of 409 in exponential form is:
409 = 4091
Now multiplying the highest exponent prime factors to calculate the LCM of 404 and 409.
LCM(404,409) = 22×1011×4091
LCM(404,409) = 165236
Factors of 404
List of positive integer factors of 404 that divides 404 without a remainder.
1, 2, 4, 101, 202, 404
Factors of 409
List of positive integer factors of 409 that divides 409 without a remainder.
1, 409
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 404 and 409, than apply into the LCM equation.
GCF(404,409) = 1
LCM(404,409) = ( 404 × 409) / 1
LCM(404,409) = 165236 / 1
LCM(404,409) = 165236
(i) The LCM of 409 and 404 is associative
LCM of 404 and 409 = LCM of 409 and 404
1. What is the LCM of 404 and 409?
Answer: LCM of 404 and 409 is 165236.
2. What are the Factors of 404?
Answer: Factors of 404 are 1, 2, 4, 101, 202, 404. There are 6 integers that are factors of 404. The greatest factor of 404 is 404.
3. What are the Factors of 409?
Answer: Factors of 409 are 1, 409. There are 2 integers that are factors of 409. The greatest factor of 409 is 409.
4. How to Find the LCM of 404 and 409?
Answer:
Least Common Multiple of 404 and 409 = 165236
Step 1: Find the prime factorization of 404
404 = 2 x 2 x 101
Step 2: Find the prime factorization of 409
409 = 409
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 165236 = 2 x 2 x 101 x 409
Step 4: Therefore, the least common multiple of 404 and 409 is 165236.