Solutions by everydaycalculation.com
The GCF of 642 and 81 is 3.
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: 1284 & 162 1926 & 243 214 & 27 3210 & 405 4494 & 567 1284 & 81 642 & 162 1926 & 81 642 & 243 3210 & 81 642 & 405 4494 & 81 642 & 567
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