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 3991, 3998 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 3991 and 3998 is 1.
GCF(3991,3998) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 3991
13 | 3991 |
307 | 307 |
1 |
Prime factors of 3991 are 13,307. Prime factorization of 3991 in exponential form is:
3991 = 131×3071
Prime Factorization of 3998
2 | 3998 |
1999 | 1999 |
1 |
Prime factors of 3998 are 2,1999. Prime factorization of 3998 in exponential form is:
3998 = 21×19991
∴ So by taking common prime factors GCF of 3991 and 3998 is 1
Factors of 3991
List of positive integer factors of 3991 that divides 3991 without a remainder.
1,13,307,3991
Factors of 3998
List of positive integer factors of 3998 that divides 3998 without a remainder.
1,2,1999,3998
Greatest Common Factor
We found the factors and prime factorization of 3991 and 3998. The biggest common factor number is the GCF number.
So the greatest common factor 3991 and 3998 is 1.
Also check out the Least Common Multiple of 3991 and 3998
(i) The GCF of 3991 and 3998 is associative
GCF of 3991 and 3998 = GCF of 3998 and 3991
1. What is the GCF of 3991 and 3998?
Answer: GCF of 3991 and 3998 is 1.
2. What are the Factors of 3991?
Answer: Factors of 3991 are 1, 13, 307, 3991. There are 4 integers that are factors of 3991. The greatest factor of 3991 is 3991.
3. What are the Factors of 3998?
Answer: Factors of 3998 are 1, 2, 1999, 3998. There are 4 integers that are factors of 3998. The greatest factor of 3998 is 3998.
4. How to Find the GCF of 3991 and 3998?
Answer:
Greatest Common Factor of 3991 and 3998 = 1
Step 1: Find the prime factorization of 3991
3991 = 13 x 307
Step 2: Find the prime factorization of 3998
3998 = 2 x 1999
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = = 1
Step 4: Therefore, the greatest common factor of 3991 and 3998 is 1