diff --git a/direct/birect.py b/direct/birect.py
index a4742cb..568f7f1 100644
--- a/direct/birect.py
+++ b/direct/birect.py
@@ -307,7 +307,8 @@ def birect(
 
     diagonal_cache, longest_cache = precompute_diagonals_by_length(min_diag)
     depth_limit = len(diagonal_cache)
-    diagonal_cache = precompute_diagonals_by_limit(depth_limit)
+    if depth_limit <= 500:  # prevents OverflowError: int too large to convert to float
+        diagonal_cache = precompute_diagonals_by_limit(depth_limit)
 
     for outer in range(1_000_000 if max_iters is None else max_iters):
         if precision_met() or no_more_evals():  # check stopping conditions