diff --git a/PreciseNumber.Test/PreciseNumberTests.cs b/PreciseNumber.Test/PreciseNumberTests.cs
index 10ea1d1..2b073de 100644
--- a/PreciseNumber.Test/PreciseNumberTests.cs
+++ b/PreciseNumber.Test/PreciseNumberTests.cs
@@ -905,7 +905,8 @@ public void TestDivisionWithSmallNumbers()
 	[TestMethod]
 	public void TestRadix()
 	{
-		Assert.AreEqual(2, PreciseNumber.Radix);
+		// The type stores significand × 10^exponent, so like decimal it is base 10.
+		Assert.AreEqual(10, PreciseNumber.Radix);
 	}
 
 	[TestMethod]
diff --git a/PreciseNumber/PreciseNumber.cs b/PreciseNumber/PreciseNumber.cs
index fc17624..e2bc75a 100644
--- a/PreciseNumber/PreciseNumber.cs
+++ b/PreciseNumber/PreciseNumber.cs
@@ -434,10 +434,10 @@ private static PreciseNumber ConstantTo(PreciseNumber constant, int significantD
 	/// </summary>
 	internal static CultureInfo InvariantCulture { get; } = CultureInfo.InvariantCulture;
 
-	private const int BinaryRadix = 2;
+	private const int DecimalRadix = 10;
 
 	/// <inheritdoc/>
-	public static int Radix => BinaryRadix;
+	public static int Radix => DecimalRadix;
 
 	/// <inheritdoc/>
 	public static PreciseNumber AdditiveIdentity => Zero;