diff --git a/pkg/models/task_collection_test.go b/pkg/models/task_collection_test.go
index fc163ab8be0..14e9860663c 100644
--- a/pkg/models/task_collection_test.go
+++ b/pkg/models/task_collection_test.go
@@ -1022,6 +1022,19 @@ func TestTaskCollection_ReadAll(t *testing.T) {
 			},
 			wantErr: false,
 		},
+		{
+			name:   "search for task index",
+			fields: fields{},
+			args: args{
+				search: "number #17",
+				a:      &user.User{ID: 1},
+				page:   0,
+			},
+			want: []*Task{
+				task33, // has the index 17
+			},
+			wantErr: false,
+		},
 	}
 
 	for _, tt := range tests {
diff --git a/pkg/models/tasks.go b/pkg/models/tasks.go
index ae3df859b51..db8eb30cdd2 100644
--- a/pkg/models/tasks.go
+++ b/pkg/models/tasks.go
@@ -18,8 +18,10 @@ package models
 
 import (
 	"math"
+	"regexp"
 	"sort"
 	"strconv"
+	"strings"
 	"time"
 
 	"code.vikunja.io/api/pkg/events"
@@ -237,6 +239,15 @@ func getFilterCondForSeparateTable(table string, concat taskFilterConcatinator,
 	)
 }
 
+func getTaskIndexFromSearchString(s string) (index int64) {
+	re := regexp.MustCompile("#([0-9]+)")
+	in := re.FindString(s)
+
+	stringIndex := strings.ReplaceAll(in, "#", "")
+	index, _ = strconv.ParseInt(stringIndex, 10, 64)
+	return
+}
+
 //nolint:gocyclo
 func getRawTasksForLists(s *xorm.Session, lists []*List, a web.Auth, opts *taskOptions) (tasks []*Task, resultCount int, totalItems int64, err error) {
 
@@ -356,7 +367,7 @@ func getRawTasksForLists(s *xorm.Session, lists []*List, a web.Auth, opts *taskO
 	// Then return all tasks for that lists
 	var where builder.Cond
 
-	if len(opts.search) > 0 {
+	if opts.search != "" {
 		// Postgres' is case sensitive by default.
 		// To work around this, we're using ILIKE as opposed to normal LIKE statements.
 		// ILIKE is preferred over LOWER(text) LIKE for performance reasons.
@@ -367,6 +378,11 @@ func getRawTasksForLists(s *xorm.Session, lists []*List, a web.Auth, opts *taskO
 		} else {
 			where = &builder.Like{"title", "%" + opts.search + "%"}
 		}
+
+		searchIndex := getTaskIndexFromSearchString(opts.search)
+		if searchIndex > 0 {
+			where = builder.Or(where, builder.Eq{"`index`": searchIndex})
+		}
 	}
 
 	var listIDCond builder.Cond
diff --git a/pkg/models/tasks_test.go b/pkg/models/tasks_test.go
index 371a98fd4f5..7a5dc69ffb1 100644
--- a/pkg/models/tasks_test.go
+++ b/pkg/models/tasks_test.go
@@ -761,3 +761,37 @@ func TestTask_ReadOne(t *testing.T) {
 		assert.False(t, task.IsFavorite)
 	})
 }
+
+func Test_getTaskIndexFromSearchString(t *testing.T) {
+	type args struct {
+		s string
+	}
+	tests := []struct {
+		name      string
+		args      args
+		wantIndex int64
+	}{
+		{
+			name:      "task index in text",
+			args:      args{s: "Task #12"},
+			wantIndex: 12,
+		},
+		{
+			name:      "no task index",
+			args:      args{s: "Task"},
+			wantIndex: 0,
+		},
+		{
+			name:      "not numeric but with prefix",
+			args:      args{s: "Task #aaaaa"},
+			wantIndex: 0,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if gotIndex := getTaskIndexFromSearchString(tt.args.s); gotIndex != tt.wantIndex {
+				t.Errorf("getTaskIndexFromSearchString() = %v, want %v", gotIndex, tt.wantIndex)
+			}
+		})
+	}
+}