Factor pairs of 425 are any two numbers that, when multiplied together, equal 425. The question to ask is “what two numbers multiplied together equal 425?” Every factor can be paired with another factor, and multiplying the two will result in 425.
To find the factor pairs of 425, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 425. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 5.
Step 2:
Divide 425 by the smallest prime factor, in this case, 5:
425 ÷ 5 = 85
5 and 85 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 85 as the new focus. Find the smallest prime factor that isn’t 1, and divide 85 by that number. In this case, 5 is the new smallest prime factor:
85 ÷ 5 = 17
Remember that this new factor pair is only for the factors of 85, not 425. So, to finish the factor pair for 425, you’d multiply 5 and 5 before pairing with 17:
5 x 5 = 25
Step 4:
Repeat this process until there are no longer any prime factors larger than one to divide by. At the end, you should have the full list of factor pairs.
Here are all the factor pairs for 425:
(1, 425), (5, 85), (17, 25)
So, to list all the factors of 425: 1, 5, 17, 25, 85, 425
The negative factors of 425 would be: -1, -5, -17, -25, -85, -425