1e54

1E54 is the notation for the decimal number 1×10^54, written in scientific notation. The value is equal to 10 raised to the 54th power, i.e., a 1 followed by 54 zeros in decimal form.

Its uppercase "E" is the exponent marker used to denote powers of ten; the same value is commonly written as 1e54 in many programming languages and calculators. Variations may exist, such as 1E+54 or 1e54, depending on the context or software.

Usage of this form is common in science and engineering to express very large quantities succinctly. In physics, astronomy, chemistry, and data analysis, scientific notation helps manage wide ranges of magnitude. In computing, 1E54 serves as a convenient literal for the value 10^54 in languages such as Fortran, C, Python, and in spreadsheet software.

Numerical properties: 1E54 can be represented in floating-point formats within typical ranges (for example, IEEE 754 double precision supports numbers up to about 1.8×10^308). However, decimal powers of ten are generally not stored exactly in binary floating-point; the value is typically an approximation. If exact arithmetic is required, arbitrary-precision arithmetic or decimal libraries are used, since fixed-width integer types cannot store 10^54 exactly.

See also: scientific notation, exponent notation, floating-point arithmetic.