Java: Double.MIN_VALUE vs Double.MIN_NORMAL

Double.MIN_VALUE represents the value 2⁻¹⁰⁷⁴. This is a subnormal value, and it is the overall smallest possible value that a double can represent.

A subnormal value has a 0 before the binary point: 0.significand bits × 2^exp

Double.MIN_NORMAL represents the value 2⁻¹⁰²². This is the smallest possible normal value that a double can represent.

A normal value has a 1 before the binary point: 1.significand bits × 2^exp

For details, see full article here: Normal vs Subnormal Floats