277,232,917 − 1

Largest known prime number As of June 2018, the largest known prime number is 277,232,917 − 1, a number with 23,249,425 digits. It was found in 2016 by the Great Internet Mersenne Prime Search (GIMPS). Plot of the number of digits in largest known prime by year, since the electronic computer. Note that the vertical scale is logarithmic. The red line is the exponential curve of best fit: y = exp(0.187394 t – 360.527), where t is in years. Euclid proved that there is no largest prime number, and many mathematicians and hobbyists continue to search for large prime numbers. Many of the largest known primes are Mersenne primes. As of June 2018, the seven largest known primes are Mersenne primes.[2] The last 16 record primes were Mersenne primes.[2][3] The fast Fourier transform implementation of the Lucas–Lehmer primality test for Mersenne numbers is fast compared to other known primality tests for other kinds of numbers. Please read more in the original wiki page >> click here to open the wiki...

Scientists reveal drinking champagne could improve memory

… I knew it … something in me was saying the same … if I just could remember … och, another glass might help ! New research shows that drinking one to three glasses of champagne a week may counteract the memory loss associated with ageing, and could help delay the onset of degenerative brain disorders, such as dementia. Scientists at the University of Reading have shown that the phenolic compounds found in champagne can improve spatial memory, which is responsible for recording information about one’s environment, and storing the information for future navigation....

Gödel, Escher, Bach

A must read for all who want to know about infinity … almost good enough to provide a foundation … but then it is just a carpet floating mid air as long as you don’t open your eyes … Gödel, Escher, Bach: An Eternal Golden Braid, also known as GEB, is a 1979 book by Douglas Hofstadter, described by his publishing company as “a metaphorical fugue on minds and machines in the spirit of Lewis Carroll”.[1] By exploring common themes in the lives and works of logician Kurt Gödel, artist M. C. Escher and composer Johann Sebastian Bach, GEB expounds concepts fundamental to mathematics, symmetry, and intelligence. Through illustration and analysis, the book discusses how self-reference and formal rules allow systems to acquire meaning despite being made of “meaningless” elements. It also discusses what it means to communicate, how knowledge can be represented and stored, the methods and limitations of symbolic representation, and even the fundamental notion of “meaning” itself. In response to confusion over the book’s theme, Hofstadter has emphasized that GEB is not about mathematics, art, and music but rather about how cognition and thinking emerge from well-hidden neurological mechanisms. In the book, he presents an analogy about how the individual neurons of the brain coordinate to create a unified sense of a coherent mind by comparing it to the social organization displayed in a colony of ants.[2][3]… >> Go to Source...

Moving Geometry – Time

The Linear Cycle Clock’s unique time display offers a playful alternative to the common circular dial. Sometimes it even moves … time is a miracle … >> Go to...

Miles lives

Oh my oh … he is the man … you might say was , but no – is and always will be . Strange but I always listen to his music and think of Mozart. Well, could ramamble for ages here but better behave now. As usual below is a quick link to the inevitable wiki site . Just one hint, in case you are scared of jazz or believe it’s not for you – try Kind of Blue ! Miles Dewey Davis III (May 26, 1926 – September 28, 1991) was an American jazz musician, trumpeter, bandleader, and composer. Widely considered one of the most influential musicians of the 20th century,[3] Miles Davis was, together with his musical groups, at the forefront of several major developments in jazz music, including bebop, cool jazz, hard bop, modal jazz, and jazz fusion. >> Go to Source...

Math is the hidden secret to understanding the world

Always love it when there is someone connecting the great topics : art, music, mathematics … Here is a nicely done TED by Mr. Roger Antonsen … what a guy … Unlock the mysteries and inner workings of the world through one of the most imaginative art forms ever — mathematics — with Roger Antonsen, as he explains how a slight change in perspective can reveal patterns, numbers and formulas as the gateways to empathy and understanding. >> Watch it...

The exhilarating creativity of remixing

And another super TED talk by mr mark ronson …. Sampling isn’t about “hijacking nostalgia wholesale,” says Mark Ronson. It’s about inserting yourself into the narrative of a song while also pushing that story forward. In this mind-blowingly original talk, watch the DJ scramble 15 TED Talks into an audio-visual omelette, and trace the evolution of “La Di Da Di,” Doug E. Fresh and Slick Rick’s 1984 hit that has been reimagined for every generation since. His production credits range from Amy Winehouse to Paul McCartney — ace DJ, musician and producer Mark Ronson has lived recent music history from the inside out. >> Watch...

A life in typefaces

Ted Talk : Matthew Carter Pick up a book, magazine or screen, and more than likely you’ll come across some typography designed by Matthew Carter. In this charming talk, the man behind typefaces such as Verdana, Georgia and Bell Centennial (designed just for phone books — remember them?), takes us on a spin through a career focused on the very last pixel of each letter of a font. >> Go...

Sergei Vasilievich Rachmaninoff

Sergei Vasilievich Rachmaninoff (1 April 1873 – 28 March 1943) was a Russian-born composer, pianist, and conductor.[2] Rachmaninoff is widely considered one of the finest pianists of his day and, as a composer, one of the last great representatives of Romanticism in Russian classical music.[3] Early influences of Tchaikovsky, Rimsky-Korsakov, and other Russian composers gave way to a personal style notable for its song-like melodicism, expressiveness and his use of rich orchestral colors.[4] The piano is featured prominently in Rachmaninoff’s compositional output, and through his own skills as a performer he explored the expressive possibilities of the instrument. >> Go to Source...

A-rhythm-etic. The math behind the beats

Ready to dance in your seat? Drummer Clayton Cameron breaks down different genres of music—from R&B to Latin to pop—by their beats. A talk that proves hip hop and jazz aren’t cooler than math—they simply rely on it. A pioneer in brush technique, drummer Clayton Cameron has toured with Sammy Davis Jr., Tony Bennett and jazz legend Kenny Burrell. Watch...

π

3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949129833673362440656643086021394946395224737190702179860943702770539217176293176752384674818467669405132000568127145263560827785771342757789609173637178721468440901224953430146549585371050792279689258923542019956112129021960864034418159813629774771309960518707211349999998372978049951059731732816096318595024459455346908302642522308253344685035261931188171010003137838752886587533208381420617177669147303598253490428755468731159562863882353787593751957781857780532171226806613001927876611195909216420198938095257201065485863278865936153381827968230301952035301852968995773622599413891249721775283479131515574857242454150695950829533116861727855889075098381754637464939319255060400927701671139009848824012858361603563707660104710181942955596198946767837449448255379774726847104047534646208046684259069491293313677028989152104752162056966024058038150193511253382430035587640247496473263914199272604269922796782354781636009341721641219924586315030286182974555706749838505494588586926995690927210797509302955321165344987202755960236480665499119881834797753566369807426542527862551818417574672890977772793800081647060016145249192173217214772350141441973568548161361157352552133475741849468438523323907394143334547762416862518983569485562099219222184272550254256887671790494601653466804988627232791786085784383827967976681454100953883786360950680064225125205117392984896084128488626945604241965285022210661186306744278622039194945047123713786960956364371917287467764657573962413890865832645995813390478027590099465764078951269468398352595709825822620522489407726719478268482601476990902640136394437455305068203496252451749399651431429809190659250937221696461515709858387410597885959772975498930161753928468138268683868942774155991855925245953959431049972524680845987273644695848653836736222626099124608051243884390451244136549762780797715691435997700129616089441694868555848406353422072225828488648158456028506016842739452267467678895252138522549954666727823986456596116354886230577456498035593634568174324112515076069479451096596094025228879710893145669136867228748940560101503308617928680920874760917824938589009714909675985261365549781893129784821682998948722658804857564014270477555132379641451523746234364542858444795265867821051141354735739523113427166102135969536231442952484937187110145765403590279934403742007310578539062198387447808478489683321445713868751943506430218453191048481005370614680674919278191197939952061419663428754440643745123718192179998391015919561814675142691239748940907186494231961567945208095146550225231603881930142093762137855956638937787083039069792077346722182562599661501421503068038447734549202605414665925201497442850732518666002132434088190710486331734649651453905796268561005508106658796998163574736384052571459102897064140110971206280439039759515677157700420337869936007230558763176359421873125147120532928191826186125867321579198414848829164470609575270695722091756711672291098169091528017350671274858322287183520935396572512108357915136988209144421006751033467110314126711136990865851639831501970165151168517143765761835155650884909989859982387345528331635507647918535893226185489632132933089857064204675259070915481416549859461637180270981994309924488957571282890592323326097299712084433573265489382391193259746366730583604142813883032038249037589852437441702913276561809377344403070746921120191302033038019762110110044929321516084244485963766983895228684783123552658213144957685726243344189303968642624341077322697802807318915441101044682325271620105265227211166039666557309254711055785376346682065310989652691862056476931257058635662018558100729360659876486117910453348850346113657686753249441668039626579787718556084552965412665408530614344431858676975145661406800700237877659134401712749470420562230538994561314071127000407854733269939081454664645880797270826683063432858785698305235808933065757406795457163775254202114955761581 … >> Want...

How data will transform business

What does the future of business look like? In an informative talk, Philip Evans gives a quick primer on two long-standing theories in strategy — and explains why he thinks they are essentially invalid. (Listen for the absorbing tale of a surveillance program named Nora which was so useful it prompted competing Las Vegas casinos to cooperate with one another.) Philip Evans has a bold prediction for the future of business strategy — and it starts with Big Data. » Watch...

Adam Spencer: Why I fell in love with monster prime numbers

What a guy … absolutely funny and interesting … They’re millions of digits long, and it takes an army of mathematicians and machines to hunt them down — what’s not to love about monster primes? Adam Spencer, comedian and lifelong math geek, shares his passion for these odd numbers, and for the mysterious magic of math. Radio host Adam Spencer fills Sydney’s drive-time mornings with smart math and science talk. >> Play...

Dan Bricklin: Meet the inventor of the electronic spreadsheet

Dan Bricklin changed the world forever when he codeveloped VisiCalc, the first electronic spreadsheet and grandfather of programs you probably use every day like Microsoft Excel and Google Sheets. Join the software engineer and computing legend as he explores the tangled web of first jobs, daydreams and homework problems that led to his transformational invention. Go and watch it...

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