diff --git a/projects/m1/028-prime-factors/js/index.js b/projects/m1/028-prime-factors/js/index.js
index e69de29bb..8fe0edcd7 100644
--- a/projects/m1/028-prime-factors/js/index.js
+++ b/projects/m1/028-prime-factors/js/index.js
@@ -0,0 +1,61 @@
+const readline = require('readline/promises');
+const { stdin: input, stdout: output } = require('process');
+
+
+
+async function main() {
+    const rl = readline.createInterface({ input, output });
+     try{
+       
+        await getInput(rl)
+     }
+     catch(e){
+        console.log(e)
+     }
+     finally{
+        rl.close();
+     }
+    
+    }
+    main();
+
+
+
+function getBase2(inputNumber,result=""){
+    if(inputNumber === 0){
+        return result;
+    }
+    const rest = inputNumber % 2;
+    const newInputNumber = Math.floor(inputNumber / 2);
+    result =`${rest}${result}`;
+
+    return getBase2(newInputNumber,result);
+}
+
+
+
+async function getInput(rl){
+   
+  
+   const input = await rl.question(`Please enter the number: `)
+    const inputNumber = Number.parseInt(input,10);
+   //const inputNumber = input *1;
+    if(input.trim().length === 0){
+        return;
+    }
+    
+    if(Number.isInteger(inputNumber)){
+        console.log(`conversione in base 2 vale ${getBase2(inputNumber)}`)
+    }
+    else{
+        console.log('Please enter a valid number');
+    }
+
+   
+
+ 
+     return getInput(rl,type,month);
+
+}
+
+
diff --git a/projects/m1/029-decimal-to-binary/js/index.js b/projects/m1/029-decimal-to-binary/js/index.js
index e69de29bb..335260eba 100644
--- a/projects/m1/029-decimal-to-binary/js/index.js
+++ b/projects/m1/029-decimal-to-binary/js/index.js
@@ -0,0 +1,59 @@
+const readline = require('readline/promises');
+const { stdin: input, stdout: output } = require('process');
+
+
+
+async function main() {
+    const rl = readline.createInterface({ input, output });
+     try{
+       
+        await getInput(rl)
+     }
+     catch(e){
+        console.log(e)
+     }
+     finally{
+        rl.close();
+     }
+    
+    }
+    main();
+
+
+
+function getBase2(inputNumber,result=""){
+    if(inputNumber === 0){
+        return result;
+    }
+    const rest = inputNumber % 2;
+    const newInputNumber = Math.floor(inputNumber / 2);
+    result =`${rest}${result}`;
+
+    return getBase2(newInputNumber,result);
+}
+
+
+
+async function getInput(rl){
+   
+  
+   const input = await rl.question(`Please enter the number: `)
+    const inputNumber = Number.parseInt(input,10);
+   //const inputNumber = input *1;
+    if(input.trim().length === 0){
+        return;
+    }
+    
+    if(Number.isInteger(inputNumber)){
+        console.log(`conversione in base 2 vale ${getBase2(inputNumber)}`)
+    }
+    else{
+        console.log('Please enter a valid number');
+    }
+
+   
+
+ 
+     return getInput(rl);
+
+}
\ No newline at end of file