Record numbers of tourists are flocking to Rio de Janeiro, with many seeking local tours in the city's favelas.

Number enthusiasts may be looking to the new year with a touch of melancholy. Another perfect square like 2025 (45 2 = 2,025) won’t occur again until 2116 (46 2 = 2,116). The year 2027 will be a prime ...

Note: decimals are not supported in this library. n - the argument of the function must be a plain JavaScript Number. Decimals are not supported. The number passed ...

Forget what you know about the number 666. If series of sixes, like 666, are popping up everywhere, you have no reason to fear: This sequence is associated with love and connection, according to ...