Solutions by everydaycalculation.com

The GCF of 420 and 1296 is 12.

- Find the prime factorization of 420

420 = 2 × 2 × 3 × 5 × 7 - Find the prime factorization of 1296

1296 = 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 2 × 3 - GCF =
**12**

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: 840 & 2592 210 & 648 1260 & 3888 140 & 432 2100 & 6480 2940 & 9072 840 & 1296 420 & 2592 1260 & 1296 420 & 3888 2100 & 1296 420 & 6480 2940 & 1296 420 & 9072

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