A prime number is a number that is only divisible by one and itself, which is essentially saying that it has no divisor. That takes half of all possible numbers off the table right away (the evens), ...

Jennifer Ong has been a media professional for over 20 years, first serving as a newspaper lifestyle columnist before making her way to online media. Since then, she's been delving into all things ...

When you move beyond trillions, there are some extremely mind-bending numbers, says Richard Fisher. Some of them are too large to fit in the mind – or even within the known Universe. What's the ...

If you've got the time, we've got the riddle. And it's time for a riddle about time: How many numbers are on a clock? It begins with the simplest of questions that, nevertheless, has no simple answer.

In the early 1970s mathematician Donald Knuth spent a sabbatical with his wife in Norway. The time was meant to be spent relaxing. Yet one night he woke up his partner in a state of agitation. He ...

Here’s a game: Ask a friend to give you any number and you’ll return one that’s bigger. Just add “1” to whatever number they come up with and you’re sure to win. The reason is that numbers go on ...

Do you ever seem to see repeating sequences of numbers over and over again, like 222 or 333? Or have you heard that seeing 11:11 on the clock is a lucky sign to make a wish? It definitely feels like a ...

Imaginary numbers might seem like unicorns and goblins — interesting but irrelevant to reality. But for describing matter at its roots, imaginary numbers turn out to be essential. They seem to be ...

In this day and age, phones have undeniably become the main method of communication. It seems like everyone has a cell phone in their pocket, making them capable of chatting with others over social ...