The original version of this story appeared in Quanta Magazine. A new proof has brought mathematicians one step closer to understanding the hidden order of those “atoms of arithmetic,” the prime ...

This calculation can be useful, for example, if you are deciding on the number of sportspersons selected (or rejected) for an event or the number of products approved selected or rejected for export.

Parents typically start teaching their children to count at an early age: one fish two fish, three little pigs, five little monkeys, and so on. Research has shown that kids don’t fully understand the ...