GCF for 320 and 640

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 320 and 640?

Answer: GCF of 320 and 640 is 320

(Three hundred twenty)

Finding GCF for 320 and 640 using all factors (divisors) listing

The first method to find GCF for numbers 320 and 640 is to list all factors for both numbers and pick the highest common one:

All factors of 320: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320

All factors of 640: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

So the Greatest Common Factor for 320 and 640 is 320

Finding GCF for 320 and 640 by Prime Factorization

The second method to find GCF for numbers 320 and 640 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 320: 2, 2, 2, 2, 2, 2, 5

All Prime Factors of 640: 2, 2, 2, 2, 2, 2, 2, 5

As we can see there are Prime Factors common to both numbers: 2, 2, 2, 2, 2, 2, 5

Now we need to multiply them to find GCF: 2 × 2 × 2 × 2 × 2 × 2 × 5 = 320

See Also

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 Divisor of 320 and 640? (The answer is: 320). Select the first number (e.g. '320') and the second number (e.g. '640'). 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

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

GCF Table

Number 1Number 2GCF
3056405
3066402
3076401
3086404
3096401
31064010
3116401
3126408
3136401
3146402
3156405
3166404
3176401
3186402
3196401
320640320
3216401
3226402
3236401
3246404
3256405
3266402
3276401
3286408
3296401
33064010
3316401
3326404
3336401
3346402

FAQ

What is the Greatest common Divisor of 320 and 640?

GCF of 320 and 640 is 320

See Also