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 1008 the smallest integer that is 144144 that is divisible by both numbers.
Least Common Multiple (LCM) of 1001 and 1008 is 144144.
LCM(1001,1008) = 144144
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 1008. First we will calculate the prime factors of 1001 and 1008.
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 1008
2 | 1008 |
2 | 504 |
2 | 252 |
2 | 126 |
3 | 63 |
3 | 21 |
7 | 7 |
1 |
Prime factors of 1008 are 2, 3,7. Prime factorization of 1008 in exponential form is:
1008 = 24×32×71
Now multiplying the highest exponent prime factors to calculate the LCM of 1001 and 1008.
LCM(1001,1008) = 24×32×71×111×131
LCM(1001,1008) = 144144
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 1008
List of positive integer factors of 1008 that divides 1008 without a remainder.
1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 112, 126, 144, 168, 252, 336, 504, 1008
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1001 and 1008, than apply into the LCM equation.
GCF(1001,1008) = 7
LCM(1001,1008) = ( 1001 × 1008) / 7
LCM(1001,1008) = 1009008 / 7
LCM(1001,1008) = 144144
(i) The LCM of 1008 and 1001 is associative
LCM of 1001 and 1008 = LCM of 1008 and 1001
1. What is the LCM of 1001 and 1008?
Answer: LCM of 1001 and 1008 is 144144.
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 1008?
Answer: Factors of 1008 are 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 112, 126, 144, 168, 252, 336, 504, 1008. There are 30 integers that are factors of 1008. The greatest factor of 1008 is 1008.
4. How to Find the LCM of 1001 and 1008?
Answer:
Least Common Multiple of 1001 and 1008 = 144144
Step 1: Find the prime factorization of 1001
1001 = 7 x 11 x 13
Step 2: Find the prime factorization of 1008
1008 = 2 x 2 x 2 x 2 x 3 x 3 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 144144 = 2 x 2 x 2 x 2 x 3 x 3 x 7 x 11 x 13
Step 4: Therefore, the least common multiple of 1001 and 1008 is 144144.