# Equating two SI units of time

• Sep 30th 2011, 06:37 AM
Consumariat
Equating two SI units of time
If I have two numbers;

434*10^15 and 1*10^301

How do I get these into a format in which they have the same coefficient? I know it has something to do with laws of indices and log rules etc, but am still a bit confused.

Thanks
• Sep 30th 2011, 06:48 AM
CaptainBlack
Re: Equating two SI units of time
Quote:

Originally Posted by Consumariat
If I have two numbers;

434*10^15 and 1*10^301

How do I get these into a format in which they have the same coefficient? I know it has something to do with laws of indices and log rules etc, but am still a bit confused.

Thanks

I think you are have to give us a bit more of a clue about what you really want. To do what you appear to be asking would involve over 2 hundred zeros somewhere. It seems implausible that you mean what you seem to be asking.

CB
• Sep 30th 2011, 06:55 AM
Consumariat
Re: Equating two SI units of time
Quote:

Originally Posted by CaptainBlack
I think you are have to give us a bit more of a clue about what you really want. To do what you appear to be asking would involve over 2 hundred zeros somewhere. It seems implausible that you mean what you seem to be asking.

CB

Sorry I should have made myself clear. I would like to get them both into the format x*10^y where x is the same number in each. So for example;

1*10^50 and 1*10^18
• Sep 30th 2011, 09:00 AM
emakarov
Re: Equating two SI units of time
Quote:

Originally Posted by Consumariat
I would like to get them both into the format x*10^y where x is the same number in each. So for example;

1*10^50 and 1*10^18

You cannot get them in this format because one number starts with 4 and the other with 1. However, since $\displaystyle 434 = 4.34\cdot10^2$, we have $\displaystyle 434\cdot10^{15}=4.34\cdot10^{17}$.