Greatest Common Factor of 245 and 253

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 245, 253 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 245 and 253 is 1.

GCF(245,253) = 1

GCF of 245 and 253

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 245 and 253

GCF of 245 and 253 is 1

Prime Factorization of 245


5 245
7 49
7 7
1

Prime factors of 245 are 5,7. Prime factorization of 245 in exponential form is:

245 = 51×72

Prime Factorization of 253


11 253
23 23
1

Prime factors of 253 are 11,23. Prime factorization of 253 in exponential form is:

253 = 111×231

∴ So by taking common prime factors GCF of 245 and 253 is 1

Greatest Common Factor of 245 and 253 by matching factors method

Factors of 245

List of positive integer factors of 245 that divides 245 without a remainder.

1,5,7,35,49,245

Factors of 253

List of positive integer factors of 253 that divides 253 without a remainder.

1,11,23,253

Greatest Common Factor

We found the factors and prime factorization of 245 and 253. The biggest common factor number is the GCF number.
So the greatest common factor 245 and 253 is 1.

Also check out the Least Common Multiple of 245 and 253

Properties of GCF 245 and 253

(i) The GCF of 245 and 253 is associative

GCF of 245 and 253 = GCF of 253 and 245

Related Greatest Common Factor of 245

Related Greatest Common Factor of 253

Frequently Asked Questions on GCF of 245 and 253

1. What is the GCF of 245 and 253?

Answer: GCF of 245 and 253 is 1.

2. What are the Factors of 245?

Answer: Factors of 245 are 1, 5, 7, 35, 49, 245. There are 6 integers that are factors of 245. The greatest factor of 245 is 245.

3. What are the Factors of 253?

Answer: Factors of 253 are 1, 11, 23, 253. There are 4 integers that are factors of 253. The greatest factor of 253 is 253.

4. How to Find the GCF of 245 and 253?

Answer:

Greatest Common Factor of 245 and 253 = 1

Step 1: Find the prime factorization of 245

245 = 5 x 7 x 7

Step 2: Find the prime factorization of 253

253 = 11 x 23

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = = 1

Step 4: Therefore, the greatest common factor of 245 and 253 is 1