Reference tables

Lookup tables computed when the page is built: ASCII codes, powers of two, primes and SI prefixes.

• ASCII TableAll 128 ASCII codes with decimal, hexadecimal, octal and binary alongside the character. Codes 0–31 and 127 are control characters and carry their standard abbreviation instead of a glyph.128 rows
• Powers of TwoEvery power of two up to 2⁶⁴, with the largest unsigned value that many bits can hold in the last column. The exponent is also the number of bits.65 rows
• Prime Numbers Under 1000All 168 primes below 1000 in order, with the gap to the previous prime beside each one. A gap of 2 marks a twin prime.168 rows
• SI PrefixesAll 24 SI prefixes from quetta down to quecto, with symbol and power of ten. The four outermost — ronna, quetta, ronto, quecto — were added by the General Conference on Weights and Measures in 2022.24 rows