1. Evaluate the formula 2 n 1 for n = 4. Is the result prime or composite? Why? 3. List all of the proper factors of 70. 4. List all of the proper factors of 66. 5. Is 20 abundant, perfect or...

1. Evaluate the formula 2
ⁿ

1 for n = 4. Is the result prime or composite? Why?

3. List all of the proper factors of 70.

4. List all of the proper factors of 66.

5. Is 20 abundant, perfect or deficient? Why?

6. Is 21 abundant, perfect or deficient? Why?

7. Is 49 abundant, perfect or deficient? Why?

8. Is 48 abundant, perfect or deficient? Why?