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If 2 k + 1 is prime and k > 0, then k itself must be a power of 2, [1] so 2 k + 1 is a Fermat number; such primes are called Fermat primes. As of 2023 [update] , the only known Fermat primes are F 0 = 3 , F 1 = 5 , F 2 = 17 , F 3 = 257 , and F 4 = 65537 (sequence A019434 in the OEIS ).
The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.The number π appears in many formulae across mathematics and physics.
The Xbox One is a home video game console developed by Microsoft.Announced in May 2013, it is the successor to Xbox 360 and the third console in the Xbox series.It was first released in North America, parts of Europe, Australia, and South America in November 2013 and in Japan, China, and other European countries in September 2014.
Simplified phylogenetic tree showing the relationship between modern birds and other dinosaurs [24] Based on fossil and biological evidence, most scientists accept that birds are a specialised subgroup of theropod dinosaurs [ 25 ] and, more specifically, members of Maniraptora , a group of theropods which includes dromaeosaurids and ...
The apps had been collectively downloaded over 100 million times, and consisted of a wide variety of use cases, including health, weather, photo-editing, Internet radio and emoji. [206] [207] In all of 2017, over 700,000 apps were banned from Google Play due to abusive contents; this is a 70% increase over the number of apps banned in 2016. [208]
The average user, daily, was spending 1 hour and 25 minutes on the app and opening TikTok 17 times. [224] Out of TikTok's top 100 male creators, a 2022 analysis reported 67% were white, with 54% having near-perfect facial symmetry .
The average annual temperature in the urban area of Beijing is 12.9 °C (55.2 °F) to 13.3 °C (55.9 °F), of which the average daily minimum temperature is 7.7 °C (45.9 °F) to 8.4 °C (47.1 °F), and the average daily maximum temperature is 18.5 °C (65.3 °F) to 18.9 °C (66.0 °F).
Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems.It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. [1]