A cyclic number is any integer in which successive multiples of the number are cyclic permutations (essentially number anagrams) of it. The most frequently used example of this phenomenon is the number 142857 whose multiples are simply rearrangements of the original numbers (e.g. 142857 x 2 is 285714 and 142857 x 3 is 428571). | | Today's Featured Articles | | The Android home screen is powerful and customizable—if you take the time to set it up. While not an extensive guide on all things home screen, this beginner's guide to the Android launcher should help get you started. Read More » | Not all cloud file storage services are the same. There’s a big difference between file syncing tools like Dropbox and online backup services like Backblaze when it comes to backing up your important files. Read More » | If you keep a regular eye on your credit report, you’ll notice when identity thieves open accounts in your name and when errors are listed that might cause you problems in the future. Here’s how to do it for free. Read More » | You keep hearing about podcasts—from friends, online, even on TV. But what are podcasts, and how do you get started listening to them? Read More » | Fuchsia a totally new operating system, currently in the very early stages of development at Google. How does it differ from Android and Chrome, and might it replace either one? Let’s break it down. Read More » |
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In the context of databases, Nullable refers to a field that is allowed to have no values (a null value). | | This section contains what we're reading from around the web, along with commentary from our editors. Think of it like your daily digest of the most interesting things online. | |
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