Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 1001, 1008 i.e. 7 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1001 and 1008 is 7.
GCF(1001,1008) = 7
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
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
∴ So by taking common prime factors GCF of 1001 and 1008 is 7
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
Greatest Common Factor
We found the factors and prime factorization of 1001 and 1008. The biggest common factor number is the GCF number.
So the greatest common factor 1001 and 1008 is 7.
Also check out the Least Common Multiple of 1001 and 1008
(i) The GCF of 1001 and 1008 is associative
GCF of 1001 and 1008 = GCF of 1008 and 1001
1. What is the GCF of 1001 and 1008?
Answer: GCF of 1001 and 1008 is 7.
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 GCF of 1001 and 1008?
Answer:
Greatest Common Factor of 1001 and 1008 = 7
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 those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 7
Step 4: Therefore, the greatest common factor of 1001 and 1008 is 7