ARABIC-INDIC DIGIT ONE·U+0661

١

Character Information

Code Point
U+0661
HEX
0661
Unicode Plane
Basic Multilingual Plane
Category
Decimal Digit Number

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
D9 A1
11011001 10100001
UTF16 (big Endian)
06 61
00000110 01100001
UTF16 (little Endian)
61 06
01100001 00000110
UTF32 (big Endian)
00 00 06 61
00000000 00000000 00000110 01100001
UTF32 (little Endian)
61 06 00 00
01100001 00000110 00000000 00000000
HTML Entity
١
URI Encoded
%D9%A1

Description

U+0661 is a Unicode character known as ARABIC-INDIC DIGIT ONE. It holds an essential position in Arabic numerals, specifically in the Arabic-Indic script system, which has been widely adopted across various linguistic regions. This digit symbolizes the value of one and is frequently employed in digital texts, calculations, and numerical data representation to express quantities and values accurately. The Arabic-Indic script originated from India in the 6th century AD and has since been adapted for use in other languages. It showcases a rich cultural and historical significance, reflecting the evolution of mathematical notation and the interplay of diverse civilizations throughout human history. In today's digital world, U+0661 contributes to precise communication and data handling across languages that utilize this numeral system, emphasizing the versatility and relevance of the Unicode standard in facilitating global information exchange.

How to type the ١ symbol on Windows

Hold Alt and type 1633 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character ١ has the Unicode code point U+0661. In UTF-8, it is encoded using 2 bytes because its codepoint is in the range of 0x0080 to 0x07ff.

    Therefore we know that the UTF-8 encoding will be done over 11 bits within the final 16 bits and that it will have the format: 110xxxxx 10xxxxxx
    Where the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+0661 to binary: 00000110 01100001. Those are the payload bits.

  3. Step 3: Fill in the bits to match the bit pattern:

    Obtain the final bytes by arranging the paylod bits to match the bit layout:
    11011001 10100001