In less than two decades Amazon has managed not only to become the internet’s largest retailer, but also a major competitor to traditional retailers such as Walmart. The success of the website continues to grow each year, and this year’s holiday season looks to be the biggest ever for Amazon.com.

Amazon has now revealed a few choice statistics from its 2013 holiday sales. The most impressive might be that Amazon customers ordered more than 36.8 million items from the website on “Cyber Monday” (the online equivalent of Black Friday). That equates to around 426 items ordered from the site every second.

Amazon’s big Kindle Fire bet seems to be paying off as well. According to the company its Kindle Fire tablets were the most popular tablets sold on its website. IBM analytics last week found that over 19% of all online sales Christmas day came from tablets, and Amazon’s customers were even more likely to use mobile devices as more than half of their customers shopped using a mobile device this holiday season.

All of this is tied into Amazon’s subscription service, Amazon Prime. Where other tech companies have been trying to attach their hardware to recurring revenue streams, few have achieved success in the consumer market outside of video game console manufacturers. Through Prime, Amazon encourages customers to buy more with free shipping, as well as consumer more media through Amazon Instant Video and its Kindle Lending Library program.

According to Amazon, more than one million new Prime subscribers signed up during the third week of December. The company was forced to limit new Prime sign-ups at some points this holiday season to keep it running smoothly.

“Amazon Prime membership continues to grow, and we now have tens of millions of members worldwide,” said Jeff Bezos, CEO of Amazon. They benefit from all-you-can-eat free two-day shipping on millions of eligible items and our members have a voracious appetite.”