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Learn about the history and usage of fictitious telephone numbers in movies, music and other media. Find out why 555-555-5555 is not a valid number in North America and what are some examples of famous phone numbers.
Learn about the format, prefixes, and area codes of Canadian telephone numbers, as well as the history and regulation of the North American Numbering Plan. The country code for Canada is 1, which is used for international access and trunk prefix.
Cipher algorithms and cryptographic hashes can be used as very high-quality pseudorandom number generators. However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators.
RNG stands for random number generator, a device or algorithm that produces a sequence of numbers or symbols that cannot be reasonably predicted. Learn about the methods, applications and types of RNG, such as true and pseudorandom numbers.
Mersenne Twister is a general-purpose PRNG based on a Mersenne prime. It has a 32-bit version, MT19937, and a 64-bit version, MT19937-64, with different sequences.
Area code 368 is one of the five area codes in Alberta, Canada, that entered service in 2022. It is an overlay for the entire province, along with 587, 825, 403 and 780.
Learn about the history and current status of telephone area codes in Toronto, Ontario, Canada. Find out how 647 is an overlay area code for mobile and competitive services, while 416 is the original and dominant code for landlines.
Learn about the telephone number prefixes for reaching foreign countries or areas via international telecommunication networks. Find out the country code for Niger (227) and other countries in different world zones.