GCF for 30 and 890

What is the Greatest Common Factor of 30 and 890?

Answer: GCF of 30 and 890 is 10

(Ten)

Finding GCF for 30 and 890 using all factors (divisors) listing

The first method to find GCF for numbers 30 and 890 is to list all factors for both numbers and pick the highest common one:

All factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

All factors of 890: 1, 2, 5, 10, 89, 178, 445, 890

So the Greatest Common Factor for 30 and 890 is 10

Finding GCF for 30 and 890 by Prime Factorization

The second method to find GCF for numbers 30 and 890 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 30: 2, 3, 5

All Prime Factors of 890: 2, 5, 89

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

Now we need to multiply them to find GCF: 2 × 5 = 10

GCF Table

Number 1Number 2GCF
158905
168902
178901
188902
198901
2089010
218901
228902
238901
248902
258905
268902
278901
288902
298901
3089010
318901
328902
338901
348902
358905
368902
378901
388902
398901
4089010
418901
428902
438901
448902

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 30 and 890? (The answer is: 10). Select the first number (e.g. '30') and the second number (e.g. '890'). 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 30 and 890?

GCF of 30 and 890 is 10