Numbers 880-889
A page of the Numeropedia - the Special Encyclopedia of Numbers

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880

[Music]  A frequency (Hz, Hertz) of the musical note A (La):

A0 = 27.5 Hz, A1 = 55 Hz, A2 = 110 Hz, A3 = 220 Hz, A4 = 440 Hz, A5 = 880 Hz, A6 = 1760 Hz,  A7 = 3520 Hz, A8 = 7040 Hz, A9 = 14,080 Hz and A10 = 28,160 Hz.

[Phone]  International telephone dialing code for Bangladesh.

[Phone]  An NANPA/U.S. telephone area code reserves for paid 800 services. (NANPA: North American Numbering Plan Administration).

[Tech.]  The “number system” code of an EAN-13 barcode for South Korea’s products.

881

[Math.]  A prime number.

[Phone]  An NANPA/U.S. telephone area code reserves for paid 888 services. (NANPA: North American Numbering Plan Administration).

882

[Phone]  An NANPA/U.S. telephone area code reserves for paid 877 services. (NANPA: North American Numbering Plan Administration).

[World]  The ISO country code for Samoa (was Western Samoa). (ISO-3166)

883

[Math.]  A prime number.

884

885

[Tech.]  The “number system” code of an EAN-13 barcode for Thailand’s products.

886

[Phone]  International telephone dialing code for Taiwan.

[World]  The ISO country code for Yemen. (ISO-3166)

888

[Math.]  8883 = 700,227,072, each of whose 3 digits (0, 2 and 7) appears 3 times.

[Math.]

9×9+(9–2) = 88

98×9+(9–3) = 888

987×9+(9–4) = 8,888

9,876×9+(9–5) = 88,888

98,765×9+(9–6) = 888,888

987,654×9+(9–7) = 8,888,888

9,876,543×9+(9–8) = 88,888,888

98,765,432×9+(9–9) = 888,888,888

987,654,321×9+(9–10) = 8,888,888,888

9,876,543,210×9+(9–11) = 88,888,888,888

98,765,432,099×9+(9–12) = 888,888,888,888

= 98,765,432,100×9–12.

888

[Math.]

8×8+13 = 77

88×8+13 = 717

888×8+13 = 7117

8888×8+13 = 71117

88,888×8+13 = 711,117

888,888×8+13 = 7,111,117

8,888,888×8+13 = 71,111,117

88,888,888×8+13 = 711,111,117

888,888,888×8+13 = 7,111,111,117

8,888,888,888×8+13 = 71,111,111,117

...

[Phone]  The number to key in text messaging on telephone keypad for letter T.

[Phone]  An area code for the toll-free (or WATS: Wide Area Telecommunications Service) telephone number, dialing within the U.S. and Canada. Besides the original number 800, there are: 888, 877, 866 and 855 and will be 844, 833 and 822.

[Tech.]  The “number system” code of an EAN-13 barcode for Singapore’s products.

889

[Math.]  Numbers of the same pattern, xxy, where y = x +1: 1122 = 012,544 & 012+544 = 556 & 5562 = 309,136 & 309+136 = 445 & 4452 = 198,025 & 198+025 = 223 & 2232 = 049,729 & 049+729 = 778 & 7782 = 605,284 & 605+284 = 889 & 8892 = 790,321 & 790+321 = 1111. Also: 3342 = 111556 & 111+556 = 667.

880-889

[Library]  Numbers 800-899 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Literature. Numbers 880-889 are for books in Classical Greek Literature.