How to upload more than 2 gb data in web service?

Question

Hi all,

I have a client and server application.

I want to allow user to add file upto 15 gb.

In web service, config file i did this setting. This is working for 2 gb.

<httpRuntime maxRequestLength="2097151" executionTimeout="7200"/>

I tried to increase the value of maxRequestLength property to upload file size for more than 2 gb.

But it is giving me error that
The value for the property 'maxRequestLength' is not valid. The error is: The value must be inside the range 0-2097151.

How can i upload file with more than 2 gb?

Please help..