### What is the greatest common factor of 128 and 245?

A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 128 are 1, 2, 4, 8, 16, 32, 64, and 128. The factors of 245…

### What are the factors and prime factors of 245?

The factors of 245 are 1, 5, 7, 35, 49, and 245. The prime factors of 245 are 5, 7, and 7. Determining the prime factors: The process of prime factorization is one of repeated division by primes, while obtaining a quotient without a remainder, until the process yields a quotient of 1 245 is not divisible by 2 or by 3 245 ÷ 5 = 49 ................................. 5 is a prime factor of 245…