diff --git a/1-js/02-first-steps/05-types/article.md b/1-js/02-first-steps/05-types/article.md
index 19e29701..65411fc5 100644
--- a/1-js/02-first-steps/05-types/article.md
+++ b/1-js/02-first-steps/05-types/article.md
@@ -255,7 +255,7 @@ The last three lines may need additional explanation:
There are 8 basic data types in JavaScript.
-- `number` for numbers of any kind: integer or floating-point, integers are limited by ±253.
+- `number` for numbers of any kind: integer or floating-point, integers are limited by ±(253-1)
.
- `bigint` is for integer numbers of arbitrary length.
- `string` for strings. A string may have zero or more characters, there's no separate single-character type.
- `boolean` for `true`/`false`.