As your math tutor, I’m here to help you break down factor pairs of 1649 step by step!
Factor pairs of 1649 are any two numbers that, when multiplied together, equal 1649. The question to ask is “what two numbers multiplied together equal 1649?” Every factor can be paired with another factor, and multiplying the two will result in 1649.
To find the factor pairs of 1649, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 1649. 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 17.
Step 2:
Divide 1649 by the smallest prime factor, in this case, 17:
1649 ÷ 17 = 97
17 and 97 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 97 as the new focus. Find the smallest prime factor that isn’t 1, and divide 97 by that number. In this case, 97 is the new smallest prime factor:
97 ÷ 97 = 1
Remember that this new factor pair is only for the factors of 97, not 1649. So, to finish the factor pair for 1649, you’d multiply 17 and 97 before pairing with 1:
17 x 97 = 1649
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 1649:
(1, 1649), (17, 97)
So, to list all the factors of 1649: 1, 17, 97, 1649
The negative factors of 1649 would be: -1, -17, -97, -1649
Now you’ve got it! A math tutor would always encourage you to practice with different numbers to reinforce your understanding of factor pairs. Try another one!