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 ...

The current study JavaScript Rising Stars 2025 has been released. It measures the popularity of JavaScript projects based on new GitHub stars added within the last year. n8n leads this time by a wide ...

No one won the Mega Millions jackpot in the Tuesday, Dec. 23, 2025, drawing. The winning numbers for the Dec. 23 drawing were 15, 37, 38, 41, 64, and the Mega Ball was 21. A single ticket sold in ...

You still have a chance at winning over a billion dollars this week after no ticket matched all six numbers in Monday night’s drawing. The prize for Monday surged to $1.1 billion, making it the ...

No one won the Powerball jackpot in Monday night's drawing. Two tickets sold in Arizona and California matched five numbers to win $1 million each. The winning numbers for Monday, Dec. 15, were 23, 35 ...

No one won the Powerball jackpot in the Saturday, Dec. 6, 2025, drawing. The winning numbers for Saturday's drawing were 13, 14, 26, 28, 44, with a Powerball of 7. Four tickets sold in Florida, ...

Is 170,141,183,460,469,231,731,687,303,715,884,105,727 prime? Before you ask the Internet for an answer, can you consider how you might answer that question without a ...

A Harshad number (also known as a Niven number) is an integer that is divisible by the sum of its digits. Harshad numbers are sometimes called “happy numbers” in recreational mathematics, because they ...

The odds of winning the Powerball are a dismal 1 in 292,201,338. Still, millions of people take a shot at a dream three times a week and play for a chance to match the numbers on the five white balls ...

Imagine that someone gives you a list of five numbers: 1, 6, 21, 107 and — wait for it — 47,176,870. Can you guess what comes next? If you’re stumped, you’re not alone. These are the first five busy ...