What is the GCF of 640 and 3998?
The GCF of 640 and 3998 is 2.
Steps to find GCF
- Find the prime factorization of 640
640 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 - Find the prime factorization of 3998
3998 = 2 × 1999 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 2
MathStep (Works offline)
Download our mobile app and learn how to find GCF of upto four numbers in your own time:
Android and iPhone/ iPad
Related
Find HCF of: 1280 & 7996 320 & 1999 1280 & 3998 640 & 7996 1920 & 3998 3200 & 3998 4480 & 3998
GCF Calculator
Enter two numbers separate by comma. To find GCF of more than two numbers, click here.
The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).