diff --git a/compiler/can/src/builtins.rs b/compiler/can/src/builtins.rs
index aa537b9931..d1c8008a84 100644
--- a/compiler/can/src/builtins.rs
+++ b/compiler/can/src/builtins.rs
@@ -227,24 +227,6 @@ pub fn builtin_defs_map(symbol: Symbol, var_store: &mut VarStore) -> Option<Def>
         NUM_SHIFT_RIGHT => num_shift_right_by,
         NUM_SHIFT_RIGHT_ZERO_FILL => num_shift_right_zf_by,
         NUM_INT_CAST=> num_int_cast,
-        NUM_MIN_I8=> num_min_i8,
-        NUM_MAX_I8=> num_max_i8,
-        NUM_MIN_U8=> num_min_u8,
-        NUM_MAX_U8=> num_max_u8,
-        NUM_MIN_I16=> num_min_i16,
-        NUM_MAX_I16=> num_max_i16,
-        NUM_MIN_U16=> num_min_u16,
-        NUM_MAX_U16=> num_max_u16,
-        NUM_MIN_I32=> num_min_i32,
-        NUM_MAX_I32=> num_max_i32,
-        NUM_MIN_U32=> num_min_u32,
-        NUM_MAX_U32=> num_max_u32,
-        NUM_MIN_I64=> num_min_i64,
-        NUM_MAX_I64=> num_max_i64,
-        NUM_MIN_U64=> num_min_u64,
-        NUM_MAX_U64=> num_max_u64,
-        NUM_MIN_I128=> num_min_i128,
-        NUM_MAX_I128=> num_max_i128,
         NUM_TO_I8 => num_to_i8,
         NUM_TO_I8_CHECKED => num_to_i8_checked,
         NUM_TO_I16 => num_to_i16,
diff --git a/compiler/load/src/file.rs b/compiler/load/src/file.rs
index 816aaf3fa0..83a2d6e4a5 100644
--- a/compiler/load/src/file.rs
+++ b/compiler/load/src/file.rs
@@ -3173,6 +3173,8 @@ fn load_module<'a>(
                 Loc::at_zero(ExposedName::new("maxU64")),
                 Loc::at_zero(ExposedName::new("minI128")),
                 Loc::at_zero(ExposedName::new("maxI128")),
+                Loc::at_zero(ExposedName::new("minU128")),
+                Loc::at_zero(ExposedName::new("maxU128")),
                 Loc::at_zero(ExposedName::new("toI8")),
                 Loc::at_zero(ExposedName::new("toI8Checked")),
                 Loc::at_zero(ExposedName::new("toI16")),
@@ -3338,26 +3340,64 @@ fn load_module<'a>(
                 mulChecked : Num a, Num a -> Result (Num a) [ Overflow ]*
 
                 minI8 : I8
+                minI8 = -128i8
+
                 maxI8 : I8
+                maxI8 = 127i8
+
                 minU8 : U8
+                minU8 = 0u8
+
                 maxU8 : U8
+                maxU8 = 255u8
+
                 minI16 : I16
+                minI16 = -32768i16
+
                 maxI16 : I16
+                maxI16 = 32767i16
+
                 minU16 : U16
+                minU16 = 0u16
+
                 maxU16 : U16
+                maxU16 = 65535u16
+
                 minI32 : I32
+                minI32 = -2147483648
+
                 maxI32 : I32
+                maxI32 = 2147483647
+
                 minU32 : U32
+                minU32 = 0
+
                 maxU32 : U32
+                maxU32 = 4294967295
+
                 minI64 : I64
+                minI64 = -9223372036854775808
+
                 maxI64 : I64
+                maxI64 = 9223372036854775807
+
                 minU64 : U64
+                minU64 = 0
+
                 maxU64 : U64
+                maxU64 = 18446744073709551615
 
                 minI128 : I128
+                minI128 = -170141183460469231731687303715884105728
+
                 maxI128 : I128
-                # minU128 : U128
-                # maxU128 : U128
+                maxI128 = 170141183460469231731687303715884105727
+
+                minU128 : U128
+                minU128 = 0
+
+                maxU128 : U128
+                maxU128 = 0340282366920938463463374607431768211455
 
                 toI8 : Int * -> I8
                 toI16 : Int * -> I16