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How to Tell if You're a 'Xennial'

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Generational labels began to take off with the Baby Boomers—those born in postwar America in a prospering, increasingly suburban environment. Then there was Generation X, the brooding, alt-rock-consuming cluster of babies. They were followed by the Millennials, those coming of age around 2000 and who easily adapted to the digital revolution.

Those broad strokes may now include the Xennials, a specific "micro-generation" of babies born between 1977 and 1983 who grew up with some of the basic tenets of pre-digital technology—landline phones, broadcast television, and handwritten letters—who then adapted to social media in their 20s.

The segment of the population has been identified by Dan Woodman, an associate professor of sociology at the University of Melbourne in Australia. Woodman believes Xennials deserve their own banner because of their hybrid youth that straddled the line between the last gasp of quaint communications and the rise of the internet.

"It was a particularly unique experience," Woodman told Mamamia.com. "You have a childhood, youth, and adolescence free of having to worry about social media posts and mobile phones. It was a time when we had to organize to catch up with our friends on the weekends using the landline, and actually pick a time and a place and turn up there. Then we hit this technology revolution before we were maybe in that frazzled period of our life with kids and no time to learn anything new. We hit it where we could still adopt, in a selective way, the new technologies."

Xennials' attitudes, Woodman says, are distinct from Gen X's pessimism and Millennial optimism because they've had a toe in two very different cultural landscapes. Time will tell if Woodman's Xennial label will catch on, but odds are if you grew up with a Trapper Keeper and are now reading this on a mobile device, you probably qualify as one.

[h/t Daily Mail]

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Courtesy of Gem Diamonds Ltd.
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Fifth Largest Diamond in The World Discovered in Southern Africa
Courtesy of Gem Diamonds Ltd.
Courtesy of Gem Diamonds Ltd.

The Letšeng diamond mine in the southern African nation of Lesotho is known for producing large, high-quality gems. As Bloomberg reports, a massive diamond uncovered there recently is the mine's most impressive yet. The 910-carat stone is roughly the size of two golf balls and weighs more than a billiard ball.

The diamond is thought to be the fifth largest ever discovered on Earth. Gem Diamonds Ltd., the company behind the discovery, said in a statement [PDF] that the "exceptional top quality diamond is the largest to be mined to date and highlights the unsurpassed quality of the Letšeng mine."

Beyond its size, the diamond is also remarkable for its purity. The D color Type IIa status means there are little to no nitrogen atoms muddying its color. Though Gem Diamonds hasn't revealed their price, the diamond is likely worth a huge amount: up to $40 million, analyst Ben Davis tells Bloomberg.

That's a steep price, but it's nowhere near the highest ever paid for a diamond at auction. Rare colored diamonds tend to fetch the highest bids: In 2015, the Blue Moon diamond sold for $48.5 million, and in 2017 the Pink Star was auctioned off for $71.2 million, making it the most expensive diamond of all time.

[h/t Bloomberg]

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New Largest Known Prime Number Has More Than 23 Million Digits
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Prime numbers come in all sizes: They go down to single digits and grow infinitely larger. But calculating the exact quantity of the largest prime numbers in existence takes serious time and effort. Now, thanks to help from a volunteer and his computer, the Great Internet Mersenne Prime Search (GIMPS) has identified the newest largest prime number we know of.

The prime number has 23,249,425 digits, surpassing the previous record holder by 1 million digits. It can be written as 277,232,917-1 or M77232917. Like other prime numbers, the quantity can only be divided by one and itself. But unlike some smaller primes, this one joins a special category called Mersenne primes.

Mersenne primes are found by calculating numbers to the second power and subtracting the value of one from the total. Only 50 prime numbers have been found this way, and a lot of computing power is required to uncover them.

Since 1996, GIMPS has been crowdsourcing computers to discover larger and larger prime numbers. Anyone can download their program and dedicate their unused processing power to churning out algorithms in search of the next record breaker. Volunteers whose computers successfully identify a new prime number are eligible for a cash reward of up to $3000.

The most recent winner was Jonathon Pace, a 51-year-old electrical engineer from Tennessee. His computer calculated the number M77232917 on December 26, and its prime status was independently verified by four separate computers.

GIMPS is constantly outdoing itself, with the previous largest prime announced just two years ago. If you'd like to join the effort, their prime-hunting software is free to download. But don't expect instant results: Pace was volunteering with GIMPS for 14 years before his altruism paid off. 

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