diff --git a/include/real/exact_number.hpp b/include/real/exact_number.hpp
index 5080259..34d0556 100644
--- a/include/real/exact_number.hpp
+++ b/include/real/exact_number.hpp
@@ -760,7 +760,10 @@ namespace boost {
                     exponent += integer_rhs_zeros;
                 }
 
-                integer_part = number.substr(has_sign + integer_lhs_zeros, integer_count);
+                if (integer_count != 0)
+                	integer_part = number.substr(has_sign + integer_lhs_zeros, integer_count + integer_rhs_zeros);
+                else
+                	integer_part = number.substr(has_sign + integer_lhs_zeros, integer_count);
                 decimal_part = number.substr(decimal_start_index, decimal_count);
 
                 return {integer_part, decimal_part, exponent, positive};
diff --git a/test/real_number_from_string_test.cpp b/test/real_number_from_string_test.cpp
new file mode 100644
index 0000000..de5b287
--- /dev/null
+++ b/test/real_number_from_string_test.cpp
@@ -0,0 +1,22 @@
+#include <catch2/catch.hpp>
+#include <real/real.hpp>
+#include <test_helpers.hpp>
+
+TEST_CASE("number_from_string") {
+
+    SECTION("a == b") {
+        boost::real::real<int> a ("100.1e1");
+        boost::real::real<int> b ("1001");
+        CHECK( a == b );
+    }
+    SECTION("a == b") {
+        boost::real::real<int> a ("154000.32e2");
+        boost::real::real<int> b ("15400032");
+        CHECK( a == b );
+    }
+    SECTION("a == b") {
+        boost::real::real<int> a ("123000.123e3");
+        boost::real::real<int> b ("123000123");
+        CHECK( a == b );
+    }
+}
\ No newline at end of file