GCF for 128 and 192

What is the Greatest common Divisor of 128 and 192?

Answer: GCF of 128 and 192 is 64

(Sixty-four)

Finding GCF for 128 and 192 using all factors (divisors) listing

The first method to find GCF for numbers 128 and 192 is to list all factors for both numbers and pick the highest common one:

All factors of 128: 1, 2, 4, 8, 16, 32, 64, 128

All factors of 192: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192

So the Greatest Common Factor for 128 and 192 is 64

Finding GCF for 128 and 192 by Prime Factorization

The second method to find GCF for numbers 128 and 192 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 128: 2, 2, 2, 2, 2, 2, 2

All Prime Factors of 192: 2, 2, 2, 2, 2, 2, 3

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

Now we need to multiply them to find GCF: 2 × 2 × 2 × 2 × 2 × 2 = 64

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 128 and 192? (The answer is: 64). Select the first number (e.g. '128') and the second number (e.g. '192'). 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

GCF Table

Number 1Number 2GCF
1131921
1141926
1151921
1161924
1171923
1181922
1191921
120192
1211921
1221922
1231923
1241924
1251921
1261926
1271921
128192
1291923
1301922
1311921
13219212
1331921
1341922
1351923
1361928
1371921
1381926
1391921
1401924
1411923
1421922

FAQ

What is the Greatest common Divisor of 128 and 192?

GCF of 128 and 192 is 64