diff --git a/src/EditorFeatures/Test2/IntelliSense/CSharpCompletionCommandHandlerTests_InternalsVisibleTo.vb b/src/EditorFeatures/Test2/IntelliSense/CSharpCompletionCommandHandlerTests_InternalsVisibleTo.vb
index 032c106e8f20e8789e7626ed34d1c38245dafb1c..3a8655d54056761d78bcceca1a7e79929ef7b443 100644
--- a/src/EditorFeatures/Test2/IntelliSense/CSharpCompletionCommandHandlerTests_InternalsVisibleTo.vb
+++ b/src/EditorFeatures/Test2/IntelliSense/CSharpCompletionCommandHandlerTests_InternalsVisibleTo.vb
@@ -183,6 +183,11 @@ using System.Reflection;
             Await AssertCompletionListHasItems("[assembly: InternalsVisibleTo(assemblyName: ""$$, AllInternalsVisible = true)]", True)
         End Function
 
+        <WpfFact, Trait(Traits.Feature, Traits.Features.Completion)>
+        Public Async Function AssertCompletionListHasNoItems_IfNumberIsEntered() As Task
+            Await AssertCompletionListHasItems("[assembly: InternalsVisibleTo(1$$2)]", False)
+        End Function
+
         <WpfFact, Trait(Traits.Feature, Traits.Features.Completion)>
         Public Async Function AssertCompletionListHasNoItems_IfNotInternalsVisibleToAttribute() As Task
             Await AssertCompletionListHasItems("[assembly: AssemblyVersion(""$$"")]", False)
diff --git a/src/EditorFeatures/Test2/IntelliSense/VisualBasicCompletionCommandHandlerTests_InternalsVisibleTo.vb b/src/EditorFeatures/Test2/IntelliSense/VisualBasicCompletionCommandHandlerTests_InternalsVisibleTo.vb
index 8913d0a0b3d5e19a658c43f2402bbc6d0b1bfb82..14007e9bfa8178f43ab302203f21b5db997fff21 100644
--- a/src/EditorFeatures/Test2/IntelliSense/VisualBasicCompletionCommandHandlerTests_InternalsVisibleTo.vb
+++ b/src/EditorFeatures/Test2/IntelliSense/VisualBasicCompletionCommandHandlerTests_InternalsVisibleTo.vb
@@ -182,6 +182,11 @@ Imports System.Reflection
             Await AssertCompletionListHasItems("<Assembly: InternalsVisibleTo(""$$, AllInternalsVisible:=True)>", True)
         End Function
 
+        <WpfFact, Trait(Traits.Feature, Traits.Features.Completion)>
+        Public Async Function AssertCompletionListHasNoItems_IfNumberIsEntered() As Task
+            Await AssertCompletionListHasItems("<Assembly: InternalsVisibleTo(1$$2)>", False)
+        End Function
+
         <WpfFact, Trait(Traits.Feature, Traits.Features.Completion)>
         Public Async Function AssertCompletionListHasNoItems_IfNotInternalsVisibleToAttribute() As Task
             Await AssertCompletionListHasItems("<Assembly: AssemblyVersion(""$$"")>", False)
diff --git a/src/Features/CSharp/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.cs b/src/Features/CSharp/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.cs
index 4d043add457caec03c9afce1f7304251395e3654..05de4de5c3f2ac9b92145122a3575208b2c76d63 100644
--- a/src/Features/CSharp/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.cs
+++ b/src/Features/CSharp/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.cs
@@ -8,7 +8,6 @@ namespace Microsoft.CodeAnalysis.CSharp.Completion.Providers
 {
     internal sealed class InternalsVisibleToCompletionProvider : AbstractInternalsVisibleToCompletionProvider
     {
-        protected override bool IsPositionEntirelyWithinStringLiteral(SyntaxTree syntaxTree, int position, CancellationToken cancellationToken)
-            => syntaxTree.IsEntirelyWithinStringLiteral(position, cancellationToken);
+
     }
 }
diff --git a/src/Features/Core/Portable/Completion/Providers/AbstractInternalsVisibleToCompletionProvider.cs b/src/Features/Core/Portable/Completion/Providers/AbstractInternalsVisibleToCompletionProvider.cs
index 96e0b19999e6a4cce05d7f8f158c2888dbe3ad8a..14613b89dcc65c93551165cb0691180b22f8e2e6 100644
--- a/src/Features/Core/Portable/Completion/Providers/AbstractInternalsVisibleToCompletionProvider.cs
+++ b/src/Features/Core/Portable/Completion/Providers/AbstractInternalsVisibleToCompletionProvider.cs
@@ -16,8 +16,6 @@ internal abstract class AbstractInternalsVisibleToCompletionProvider : CommonCom
     {
         private const string ProjectGuidKey = nameof(ProjectGuidKey);
 
-        protected abstract bool IsPositionEntirelyWithinStringLiteral(SyntaxTree syntaxTree, int position, CancellationToken cancellationToken);
-
         internal override bool IsInsertionTrigger(SourceText text, int insertedCharacterPosition, OptionSet options)
         {
             var ch = text[insertedCharacterPosition];
@@ -28,9 +26,9 @@ public override async Task ProvideCompletionsAsync(CompletionContext context)
         {
             var cancellationToken = context.CancellationToken;
             var syntaxTree = await context.Document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
-            if (IsPositionEntirelyWithinStringLiteral(syntaxTree, context.Position, cancellationToken))
+            var syntaxFactsService = context.Document.GetLanguageService<ISyntaxFactsService>();
+            if (syntaxFactsService.IsEntirelyWithinStringOrCharOrNumericLiteral(syntaxTree, context.Position, cancellationToken))
             {
-                var syntaxFactsService = context.Document.GetLanguageService<ISyntaxFactsService>();
                 var token = syntaxTree.FindTokenOnLeftOfPosition(context.Position, cancellationToken);
                 var attributeSyntaxNode = GetAttributeSyntaxNodeOfToken(syntaxFactsService, token);
                 if (attributeSyntaxNode == null)
diff --git a/src/Features/VisualBasic/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.vb b/src/Features/VisualBasic/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.vb
index 4ff9b97dda10a0d94cc772468dc5f245a8cbae58..f0aadcfc5654277b5e8c529f657bbe414259150c 100644
--- a/src/Features/VisualBasic/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.vb
+++ b/src/Features/VisualBasic/Portable/Completion/CompletionProviders/InternalsVisibleToCompletionProvider.vb
@@ -8,8 +8,5 @@ Namespace Microsoft.CodeAnalysis.VisualBasic.Completion.Providers
     Friend NotInheritable Class InternalsVisibleToCompletionProvider
         Inherits AbstractInternalsVisibleToCompletionProvider
 
-        Protected Overrides Function IsPositionEntirelyWithinStringLiteral(syntaxTree As SyntaxTree, position As Integer, cancellationToken As CancellationToken) As Boolean
-            Return syntaxTree.IsEntirelyWithinStringLiteral(position, cancellationToken)
-        End Function
     End Class
 End Namespace