Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 4001 and 4005 the smallest integer that is 16024005 that is divisible by both numbers.
Least Common Multiple (LCM) of 4001 and 4005 is 16024005.
LCM(4001,4005) = 16024005
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 4001 and 4005. First we will calculate the prime factors of 4001 and 4005.
Prime Factorization of 4001
4001 | 4001 |
1 |
Prime factors of 4001 are 4001. Prime factorization of 4001 in exponential form is:
4001 = 40011
Prime Factorization of 4005
3 | 4005 |
3 | 1335 |
5 | 445 |
89 | 89 |
1 |
Prime factors of 4005 are 3, 5,89. Prime factorization of 4005 in exponential form is:
4005 = 32×51×891
Now multiplying the highest exponent prime factors to calculate the LCM of 4001 and 4005.
LCM(4001,4005) = 32×51×891×40011
LCM(4001,4005) = 16024005
Factors of 4001
List of positive integer factors of 4001 that divides 4001 without a remainder.
1, 4001
Factors of 4005
List of positive integer factors of 4005 that divides 4005 without a remainder.
1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4001 and 4005, than apply into the LCM equation.
GCF(4001,4005) = 1
LCM(4001,4005) = ( 4001 × 4005) / 1
LCM(4001,4005) = 16024005 / 1
LCM(4001,4005) = 16024005
(i) The LCM of 4005 and 4001 is associative
LCM of 4001 and 4005 = LCM of 4005 and 4001
1. What is the LCM of 4001 and 4005?
Answer: LCM of 4001 and 4005 is 16024005.
2. What are the Factors of 4001?
Answer: Factors of 4001 are 1, 4001. There are 2 integers that are factors of 4001. The greatest factor of 4001 is 4001.
3. What are the Factors of 4005?
Answer: Factors of 4005 are 1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005. There are 12 integers that are factors of 4005. The greatest factor of 4005 is 4005.
4. How to Find the LCM of 4001 and 4005?
Answer:
Least Common Multiple of 4001 and 4005 = 16024005
Step 1: Find the prime factorization of 4001
4001 = 4001
Step 2: Find the prime factorization of 4005
4005 = 3 x 3 x 5 x 89
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 16024005 = 3 x 3 x 5 x 89 x 4001
Step 4: Therefore, the least common multiple of 4001 and 4005 is 16024005.