Solutions by everydaycalculation.com
The GCF of 21 and 398 is 1.
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
Find HCF of: 42 & 796 63 & 1194 105 & 1990 147 & 2786 42 & 398 21 & 796 63 & 398 21 & 1194 105 & 398 21 & 1990 147 & 398 21 & 2786
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).
© everydaycalculation.com