For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Many retirees and would-be retirees are worried about outliving their money. And with good reason: Most don’t know their date of death and, thus, they don’t know how long their money has to last. To ...

A factor is a number which divides into another number, without leaving a remainder. Factors should be whole, positive numbers. Factors always come in pairs. This pair will always multiply together to ...

A brain teaser is like a fun little challenge for your mind. It’s a puzzle or riddle which is designed to make you think creatively and critically, often in ways you’re not used to. At first glance, a ...

The Rasmussen Reports daily Presidential Tracking Poll for Thursday shows that 47% of Likely U.S. Voters approve of President Trump’s job performance. Fifty-one (51%) disapprove. The latest figures ...