diff --git a/src/julia-parser.scm b/src/julia-parser.scm
index ce1f6a67c8c43..36981c0ea0d50 100644
--- a/src/julia-parser.scm
+++ b/src/julia-parser.scm
@@ -342,7 +342,7 @@
           ((<= l 32)  (uint32 n))
           ((<= l 64)  (uint64 n))
           ((<= l 128) `(macrocall @uint128_str ,s))
-          (else       `(macrocall @big_str  ,s)))))
+          (else       (error "Hex or binary literal too large for UInt128")))))
 
 (define (sized-uint-oct-literal n s)
   (if (string.find s "o0")
@@ -354,7 +354,7 @@
                 (else             (uint64 n)))
           (if (oct-within-uint128? s)
               `(macrocall @uint128_str ,s)
-              `(macrocall @big_str ,s)))))
+              (error "Octal literal too large for UInt128")))))
 
 (define (strip-leading-0s s)
   (define (loop i)
diff --git a/test/numbers.jl b/test/numbers.jl
index a3a07ec586b21..e187f0447d808 100644
--- a/test/numbers.jl
+++ b/test/numbers.jl
@@ -1652,7 +1652,8 @@ end
 @test isa(0b0000000000000000000000000000000000000000000000000000000000000000,UInt64)
 @test isa(0b00000000000000000000000000000000000000000000000000000000000000000,UInt128)
 @test isa(0b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,UInt128)
-@test isa(0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,BigInt)
+#@test isa(0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,BigInt)
+@test_throws ParseError parse("0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
 @test isa(0b11111111,UInt8)
 @test isa(0b111111111,UInt16)
 @test isa(0b1111111111111111,UInt16)
@@ -1662,7 +1663,8 @@ end
 @test isa(0b1111111111111111111111111111111111111111111111111111111111111111,UInt64)
 @test isa(0b11111111111111111111111111111111111111111111111111111111111111111,UInt128)
 @test isa(0b11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111,UInt128)
-@test isa(0b111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111,BigInt)
+#@test isa(0b111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111,BigInt)
+@test_throws ParseError parse("0b111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111")
 
 # octal literals
 
@@ -1680,7 +1682,8 @@ end
 @test isa(0o000000000000000000000,UInt64)
 @test isa(0o0000000000000000000000,UInt128)
 @test isa(0o000000000000000000000000000000000000000000,UInt128)
-@test isa(0o0000000000000000000000000000000000000000000,BigInt)
+#@test isa(0o0000000000000000000000000000000000000000000,BigInt)
+@test_throws ParseError parse("0o0000000000000000000000000000000000000000000")
 @test isa(0o11,UInt8)
 @test isa(0o111,UInt8)
 @test isa(0o11111,UInt16)
@@ -1691,10 +1694,10 @@ end
 @test isa(0o1111111111111111111111,UInt64)
 @test isa(0o111111111111111111111111111111111111111111,UInt128)
 @test isa(0o1111111111111111111111111111111111111111111,UInt128)
-@test isa(0o11111111111111111111111111111111111111111111,BigInt)
-@test 0o4000000000000000000000000000000000000000000 ==
-    340282366920938463463374607431768211456
-
+#@test isa(0o11111111111111111111111111111111111111111111,BigInt)
+@test_throws ParseError parse("0o11111111111111111111111111111111111111111111")
+#@test 0o4000000000000000000000000000000000000000000 ==
+#    340282366920938463463374607431768211456
 # hexadecimal literals
 
 @test isa(0x00,UInt8)
@@ -1706,7 +1709,8 @@ end
 @test isa(0x0000000000000000,UInt64)
 @test isa(0x00000000000000000,UInt128)
 @test isa(0x00000000000000000000000000000000,UInt128)
-@test isa(0x000000000000000000000000000000000,BigInt)
+#@test isa(0x000000000000000000000000000000000,BigInt)
+@test_throws ParseError parse("0x000000000000000000000000000000000")
 @test isa(0x11,UInt8)
 @test isa(0x111,UInt16)
 @test isa(0x1111,UInt16)
@@ -1716,7 +1720,8 @@ end
 @test isa(0x1111111111111111,UInt64)
 @test isa(0x11111111111111111,UInt128)
 @test isa(0x11111111111111111111111111111111,UInt128)
-@test isa(0x111111111111111111111111111111111,BigInt)
+#@test isa(0x111111111111111111111111111111111,BigInt)
+@test_throws ParseError parse("0x111111111111111111111111111111111")
 
 # "-" is not part of unsigned literals
 @test -0x10 == -(0x10)
@@ -1729,17 +1734,18 @@ end
 @test -0o0000000000000000000001 == -(0o0000000000000000000001)
 @test -0b00000000000000000000000000000000000000000000000000000000000000001 ==
     -(0b00000000000000000000000000000000000000000000000000000000000000001)
-@test -0x000000000000000000000000000000001 == -(0x000000000000000000000000000000001)
-@test -0o0000000000000000000000000000000000000000001 ==
-    -(0o0000000000000000000000000000000000000000001)
-@test -0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 ==
-    -(0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001)
+#@test -0x000000000000000000000000000000001 == -(0x000000000000000000000000000000001)
+#@test -0o0000000000000000000000000000000000000000001 ==
+#    -(0o0000000000000000000000000000000000000000001)
+#@test -0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 ==
+#    -(0b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001)
 
 @test isa(-0x00,UInt8)
 @test isa(-0x0000000000000000,UInt64)
 @test isa(-0x00000000000000000,UInt128)
 @test isa(-0x00000000000000000000000000000000,UInt128)
-@test isa(-0x000000000000000000000000000000000,BigInt)
+#@test isa(-0x000000000000000000000000000000000,BigInt)
+@test_throws ParseError parse("-0x000000000000000000000000000000000")
 
 # Float32 literals
 @test isa(1f0,Float32)