Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2000 and 2005 the smallest integer that is 802000 that is divisible by both numbers.
Least Common Multiple (LCM) of 2000 and 2005 is 802000.
LCM(2000,2005) = 802000
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 2000 and 2005. First we will calculate the prime factors of 2000 and 2005.
Prime Factorization of 2000
2 | 2000 |
2 | 1000 |
2 | 500 |
2 | 250 |
5 | 125 |
5 | 25 |
5 | 5 |
1 |
Prime factors of 2000 are 2,5. Prime factorization of 2000 in exponential form is:
2000 = 24×53
Prime Factorization of 2005
5 | 2005 |
401 | 401 |
1 |
Prime factors of 2005 are 5,401. Prime factorization of 2005 in exponential form is:
2005 = 51×4011
Now multiplying the highest exponent prime factors to calculate the LCM of 2000 and 2005.
LCM(2000,2005) = 24×53×4011
LCM(2000,2005) = 802000
Factors of 2000
List of positive integer factors of 2000 that divides 2000 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000
Factors of 2005
List of positive integer factors of 2005 that divides 2005 without a remainder.
1, 5, 401, 2005
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2000 and 2005, than apply into the LCM equation.
GCF(2000,2005) = 5
LCM(2000,2005) = ( 2000 × 2005) / 5
LCM(2000,2005) = 4010000 / 5
LCM(2000,2005) = 802000
(i) The LCM of 2005 and 2000 is associative
LCM of 2000 and 2005 = LCM of 2005 and 2000
1. What is the LCM of 2000 and 2005?
Answer: LCM of 2000 and 2005 is 802000.
2. What are the Factors of 2000?
Answer: Factors of 2000 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000. There are 20 integers that are factors of 2000. The greatest factor of 2000 is 2000.
3. What are the Factors of 2005?
Answer: Factors of 2005 are 1, 5, 401, 2005. There are 4 integers that are factors of 2005. The greatest factor of 2005 is 2005.
4. How to Find the LCM of 2000 and 2005?
Answer:
Least Common Multiple of 2000 and 2005 = 802000
Step 1: Find the prime factorization of 2000
2000 = 2 x 2 x 2 x 2 x 5 x 5 x 5
Step 2: Find the prime factorization of 2005
2005 = 5 x 401
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 802000 = 2 x 2 x 2 x 2 x 5 x 5 x 5 x 401
Step 4: Therefore, the least common multiple of 2000 and 2005 is 802000.