What is the greatest common factor of 210 and 525?

The greatest common factor (GCF) of two numbers is the largest number that divides both numbers evenly. To find the GCF of 210 and 525, you need to identify the common factors of both numbers. The factors of 210 are 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, and 210. The factors of 525 are 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, and 525. The greatest common factor of 210 and 525 is 105.