what is the greatest common factor of 245, 385, and 539
To find the greatest common factor (GCF) of three numbers, you'll need to find the largest number that divides all of them evenly. Here's how you can find the GCF of 245, 385, and 539:
1. Start by finding the prime factors of each number. Prime factors are the prime numbers that can be multiplied together to get the original number.
Prime factors of 245: 5 * 7 * 7
Prime factors of 385: 5 * 7 * 11
Prime factors of 539: 7 * 7 * 11
2. Identify the common prime factors among the three numbers. In this case, the common prime factors are 5, 7, and 11.
3. Calculate the GCF by multiplying the common prime factors together. In this case, the GCF is 5 * 7 * 7 * 11 = 2695.
Therefore, the greatest common factor of 245, 385, and 539 is 2695.