Can you use Verizon's iphone 5 on Virgin Mobile's Network?

If this is a stupid question please forgive me, I'm not a tech guy like that, but I do know that Verizon Wireless' iPhone5 came Factory Unlocked. I asked the rep that sold it to me at Verizon. My contract with verizon wireless is about to be over soon and i'm looking for something a little cheaper. So i thought,"why not virgin mobile" Some people have told me that i can, others told me no i can't. Can someone please let me know if this can be done or not. I want to use my Verizon Wireless (which comes factory unlocked by default) on virgin mobiles net work

Yes, I bet if you search on google you could find a guide