Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1001 and 1002 the smallest integer that is 1003002 that is divisible by both numbers.
Least Common Multiple (LCM) of 1001 and 1002 is 1003002.
LCM(1001,1002) = 1003002
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 1001 and 1002. First we will calculate the prime factors of 1001 and 1002.
Prime Factorization of 1001
7 | 1001 |
11 | 143 |
13 | 13 |
1 |
Prime factors of 1001 are 7, 11,13. Prime factorization of 1001 in exponential form is:
1001 = 71×111×131
Prime Factorization of 1002
2 | 1002 |
3 | 501 |
167 | 167 |
1 |
Prime factors of 1002 are 2, 3,167. Prime factorization of 1002 in exponential form is:
1002 = 21×31×1671
Now multiplying the highest exponent prime factors to calculate the LCM of 1001 and 1002.
LCM(1001,1002) = 21×31×71×111×131×1671
LCM(1001,1002) = 1003002
Factors of 1001
List of positive integer factors of 1001 that divides 1001 without a remainder.
1, 7, 11, 13, 77, 91, 143, 1001
Factors of 1002
List of positive integer factors of 1002 that divides 1002 without a remainder.
1, 2, 3, 6, 167, 334, 501, 1002
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1001 and 1002, than apply into the LCM equation.
GCF(1001,1002) = 1
LCM(1001,1002) = ( 1001 × 1002) / 1
LCM(1001,1002) = 1003002 / 1
LCM(1001,1002) = 1003002
(i) The LCM of 1002 and 1001 is associative
LCM of 1001 and 1002 = LCM of 1002 and 1001
1. What is the LCM of 1001 and 1002?
Answer: LCM of 1001 and 1002 is 1003002.
2. What are the Factors of 1001?
Answer: Factors of 1001 are 1, 7, 11, 13, 77, 91, 143, 1001. There are 8 integers that are factors of 1001. The greatest factor of 1001 is 1001.
3. What are the Factors of 1002?
Answer: Factors of 1002 are 1, 2, 3, 6, 167, 334, 501, 1002. There are 8 integers that are factors of 1002. The greatest factor of 1002 is 1002.
4. How to Find the LCM of 1001 and 1002?
Answer:
Least Common Multiple of 1001 and 1002 = 1003002
Step 1: Find the prime factorization of 1001
1001 = 7 x 11 x 13
Step 2: Find the prime factorization of 1002
1002 = 2 x 3 x 167
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1003002 = 2 x 3 x 7 x 11 x 13 x 167
Step 4: Therefore, the least common multiple of 1001 and 1002 is 1003002.