diff --git "a/T2-\354\230\201\354\247\204/5-Number Theory/P1929.java" "b/T2-\354\230\201\354\247\204/5-Number Theory/P1929.java"
new file mode 100644
index 0000000..fb54bf7
--- /dev/null
+++ "b/T2-\354\230\201\354\247\204/5-Number Theory/P1929.java"	
@@ -0,0 +1,34 @@
+import java.util.Scanner;
+
+public class P1929 {
+
+  public static void main(String[] args) {
+
+    Scanner sc = new Scanner(System.in);
+    int M = sc.nextInt();
+    int N = sc.nextInt();
+
+    boolean[] prime = new boolean[N + 1];
+    for (int i = 0; i <= N; i++) {
+      prime[i] = false;
+    }
+
+    //에라토스테네스의 체
+    for(int i = 2; i <= Math.sqrt(N); i++){
+      if(prime[i]){
+        continue;
+      }
+      for(int j = i + i; j < N; j+= i){
+        prime[j] = true; // true = 소수가 아닌 수
+      }
+    }
+
+    for(int i = M; i < N; i++){
+      if(!prime[i]){
+        System.out.println(i);
+      }
+    }
+
+
+  }
+}