added tut04

Tutorium/tut04/src/primes.py

@@ -0,0 +1,18 @@
+def is_prime(n: int) -> bool:
+    if n < 2:
+        return False
+    for i in range(2, n // 2 + 1):
+        if n % i == 0:
+            return False
+    return True
+
+
+def next_prime(n: int) -> int:
+    num = n + 1
+    while not is_prime(num):
+        num += 1
+    return num
+
+
+if __name__ == '__main__':
+    print(next_prime(1024))