diff --git a/cmd/multiplicativeOrder.go b/cmd/multiplicativeOrder.go
new file mode 100644
index 0000000..a47a5b1
--- /dev/null
+++ b/cmd/multiplicativeOrder.go
@@ -0,0 +1,70 @@
+/*
+Copyright © 2025 filifa
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package cmd
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/spf13/cobra"
+	"scm.dairydemon.net/filifa/mathtools/internal/lib"
+)
+
+var multiplicativeOrderBase string
+var multiplicativeOrderModulus string
+
+func multiplicativeOrder(cmd *cobra.Command, args []string) {
+	g, ok := new(big.Int).SetString(multiplicativeOrderBase, 10)
+	if !ok {
+		cobra.CheckErr("invalid base " + multiplicativeOrderBase)
+	}
+
+	m, ok := new(big.Int).SetString(multiplicativeOrderModulus, 10)
+	if !ok {
+		cobra.CheckErr("invalid modulus " + multiplicativeOrderModulus)
+	}
+
+	k := lib.MultiplicativeOrder(g, m)
+	fmt.Println(k)
+}
+
+// multiplicativeOrderCmd represents the multiplicativeOrder command
+var multiplicativeOrderCmd = &cobra.Command{
+	Use:   "multiplicative-order",
+	Short: "Compute multiplicative order",
+	Long:  `Compute the multiplicative order of a number given a modulus.`,
+	Run:   multiplicativeOrder,
+}
+
+func init() {
+	rootCmd.AddCommand(multiplicativeOrderCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// multiplicativeOrderCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// multiplicativeOrderCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	multiplicativeOrderCmd.Flags().StringVarP(&multiplicativeOrderBase, "base", "g", "", "base")
+	multiplicativeOrderCmd.Flags().StringVarP(&multiplicativeOrderModulus, "modulus", "m", "", "modulus")
+
+	multiplicativeOrderCmd.MarkFlagRequired("base")
+	multiplicativeOrderCmd.MarkFlagRequired("modulus")
+}