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There are known formulae to evaluate the prime-counting function (the number of primes smaller than a given value) faster than computing the primes. This has been used to compute that there are 1,925,320,391,606,803,968,923 primes (roughly 2 × 10 21 ) smaller than 10 23 .
2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number. Because it forms the basis of a duality, it has religious and spiritual significance in many cultures.
1xx Special numbers 001 and 00xx Carrier selection codes 0x 2-digit geographic area codes 0xx 3-digit geographic area codes 0xxx 4-digit geographic area codes 0xxxx 5-digit geographic area codes 0x0 3-digit non-Geographic area codes (excluding 010) 0xx0 4-digit non-Geographic area codes (01x0, 0570, 0800, 0910, 0990)
This is a discussion of telephone numbers in Ukraine.The nation of Ukraine has country code +380.It switched to the European Union's common dialing plan in 2009. Thus, Ukrainian phone numbers consist of a 2-digit zone code, an optional subzone code, an optional filler (zero to two "2 " 's), and the local phone number (five to seven digits).
Before area codes were shortened from 4 digit to 2~3 digit in June 2000, there were 1 digit exchange number (usually "2") with some 2 digit exchange numbers so some phone numbers like 0347-61-XXXX, 0443-2-XXXX or 0525-40-XXXX existed.
The country's country calling code is +966. Saudi Arabia's numbering plan is the following: [1] 011 XXX XXXX - Riyadh & the greater central region; 012 XXX XXXX - Western region, includes Makkah, Jeddah, Taif, Rabigh
When writing a telephone number with the area code, the area code and subscriber number is separated with a hyphen. Examples: A number 2xxx xxxx in Kuala Lumpur: 03-2xxx xxxx; A number 2xx xxxx in George Town, Penang: 04-2xx xxxx; A number 2xx xxxx in Johor Bahru, Johor: 07-2xx xxxx; A number 2x xxxx in Kuching, Sarawak: 082-2x xxxx
AOL began in 1983, as a short-lived venture called Control Video Corporation (CVC), founded by William von Meister.Its sole product was an online service called GameLine for the Atari 2600 video game console, after von Meister's idea of buying music on demand was rejected by Warner Bros. [8] Subscribers bought a modem from the company for $49.95 and paid a one-time $15 setup fee.