## Writing number in index form with a prime number base?

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.
Trillian
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### Writing number in index form with a prime number base?

Hi, I desperately need help in knowing how to solve a problem that requires a number to be written in index form with a prime number base. I can see the answers in the back of the text, but I have no idea how they get those answers. This is for both whole numbers and fractions.

An example of the questions are;

Write each number in index form with a prime number base
a) 8 b) 64 c) 81 d) 1/13 e) 1/49 f) 1/13^3

Martingale
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### Re: Writing number in index form with a prime number base?

Trillian wrote:Hi, I desperately need help in knowing how to solve a problem that requires a number to be written in index form with a prime number base. I can see the answers in the back of the text, but I have no idea how they get those answers. This is for both whole numbers and fractions.

An example of the questions are;

Write each number in index form with a prime number base
a) 8 b) 64 c) 81 d) 1/13 e) 1/49 f) 1/13^3

do you mean....
$2^3$
$2^6$
$3^4$
$13^{-1}$
$7^{-2}$
$13^{-3}$

Trillian
Posts: 2
Joined: Tue Jul 20, 2010 12:01 pm
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### Re: Writing number in index form with a prime number base?

Yes! Those are the answers but I don't know how they get those answers - I need to know how to work it out for myself. Thanks for replying

Martingale
Posts: 344
Joined: Mon Mar 30, 2009 1:30 pm
Location: USA
Contact:

### Re: Writing number in index form with a prime number base?

Trillian wrote:Yes! Those are the answers but I don't know how they get those answers - I need to know how to work it out for myself. Thanks for replying

$8=2\times4=2\times2\times2=2^3$

stapel_eliz
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Trillian wrote:I don't know how they get those answers - I need to know how to work it out for myself.

To learn how to factor numbers, try this lesson.