<title>Numbers & Integers</title> <cat>Dev.Lua</cat> All numbers in Lua use the [double-precision floating-point format](https://en.wikipedia.org/wiki/double-precision_floating-point_format). Even integers are stored in this format. The <page>math</page> library is the primary number operation library that contains trigonometric, rounding and useful constants. The following is a comprehensive list of all valid ways to define numbers in Lua. ```lua print( 123, --- 123 123.456, --- 123.456 123.456e7, --- 1234560000 0x123.456e7, --- 291.271216... 123e4, --- 1230000 0x0FFp2 --- 1020⤶ 123e+4, --- 1230000⤶ 123e-4, --- 0.0123⤶ 0x0FFp2, --- 1020⤶ 0x0FFp+2, --- 1020⤶ 0x0FFp-2, --- 63.75⤶ -- 123e4.5 is not valid -- 0x0FFp123.456 is not valid ) ```