Factor pairs of 150 are any two numbers that, when multiplied together, equal 150. The question to ask is “what two numbers multiplied together equal 150?” Every factor can be paired with another factor, and multiplying the two will result in 150.
To find the factor pairs of 150, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 150. 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 2.
Step 2:
Divide 150 by the smallest prime factor, in this case, 2:
150 ÷ 2 = 75
2 and 75 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 75 as the new focus. Find the smallest prime factor that isn’t 1, and divide 75 by that number. In this case, 3 is the new smallest prime factor:
75 ÷ 3 = 25
Remember that this new factor pair is only for the factors of 75, not 150. So, to finish the factor pair for 150, you’d multiply 2 and 3 before pairing with 25:
2 x 3 = 6
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 150:
(1, 150), (2, 75), (3, 50), (5, 30), (6, 25), (10, 15)
So, to list all the factors of 150: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
The negative factors of 150 would be: -1, -2, -3, -5, -6, -10, -15, -25, -30, -50, -75, -150