1e6

1e6 is a numeric expression in scientific notation that represents the decimal number 1 × 10^6, which equals 1,000,000. The notation uses a base of ten and a coefficient of 1 in this case, but can be used with other coefficients to denote different numbers. It is widely used in science, engineering, and computing to express large magnitudes concisely and to emphasize scale rather than exact digits.

In programming languages, 1e6 is a floating-point literal. In many languages, it evaluates to 1000000.0 and is typically stored as a double-precision floating point number; since 1,000,000 is within 2^53, its binary representation is exact in IEEE 754 double precision.

SI prefixes: 1e6 corresponds to the prefix mega- (M), so 1e6 bytes equals one decimal megabyte. However, in digital storage, a mebibyte equals 2^20 bytes (1,048,576 bytes), which is slightly larger than 1e6 bytes.

Mathematical notes: 1e6 is also a perfect square, equal to 1000^2, and a highly round numeric milestone for counting, statistics, and data volumes. The concept of scientific notation emerged in early modern mathematics to simplify handling very large or small numbers and is now standard in scientific communication.