GCF for 90 and 385

What is the Greatest Common Factor of 90 and 385?

Answer: GCF of 90 and 385 is 5

(Five)

Finding GCF for 90 and 385 using all factors (divisors) listing

The first method to find GCF for numbers 90 and 385 is to list all factors for both numbers and pick the highest common one:

All factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

All factors of 385: 1, 5, 7, 11, 35, 55, 77, 385

So the Greatest Common Factor for 90 and 385 is 5

Finding GCF for 90 and 385 by Prime Factorization

The second method to find GCF for numbers 90 and 385 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 90: 2, 3, 3, 5

All Prime Factors of 385: 5, 7, 11

As we can see there is only one Prime Factor common to both numbers. It is 5

So 5 is the Greatest Common Factor of 90 and 385

Related Calculations

GCF Table

Number 1Number 2GCF
753855
763851
7738577
783851
793851
803855
813851
823851
833851
843857
853855
863851
873851
8838511
893851
903855
913857
923851
933851
943851
953855
963851
973851
983857
9938511
1003855
1013851
1023851
1033851
1043851

About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest Common Factor of 90 and 385? (The answer is: 5). Select the first number (e.g. '90') and the second number (e.g. '385'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder

FAQ

What is the Greatest Common Factor of 90 and 385?

GCF of 90 and 385 is 5