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Google's John Mueller said in a Google Webmaster Help thread that having numbers in a URL doesn't make a difference for ranking purposes.
John said, "No, the number in the domain name doesn't matter for ranking." He then explained to the webmaster why they didn't see their site ranking well by adding "sometimes ranking well in search can take a bit of time & work, so I'd keep it up!"
So if you had a domain name, like www.xbox1.com, it doesn't work any better or worse than www.xboxone.com.
So have fun with having numbers in your URLs, they work just fine.
Forum discussion at Google Webmaster Help.
