diff --git a/Jupiter/Functions.c b/Jupiter/Functions.c
index 7af4b52..4b17f85 100644
--- a/Jupiter/Functions.c
+++ b/Jupiter/Functions.c
@@ -598,12 +598,24 @@ int Jupiter_strtoi(const char *str, int base)
 	return Jupiter_strtoi_nospace(str, base);
 }
 
+long long Jupiter_strtoll(const char *str, int base)
+{
+	while (isspace(*str)) str++;
+	return Jupiter_strtoll_nospace(str, base);
+}
+
 unsigned int Jupiter_strtoui(const char *str, int base)
 {
 	while (isspace(*str)) str++;
 	return Jupiter_strtoui_nospace(str, base);
 }
 
+unsigned long long Jupiter_strtoull(const char *str, int base)
+{
+	while (isspace(*str)) str++;
+	return Jupiter_strtoull_nospace(str, base);
+}
+
 double Jupiter_strtod(const char *str)
 {
 	while (isspace(*str)) str++;
@@ -616,6 +628,12 @@ int Jupiter_strtoi_nospace(const char *str, int base)
 	return -1 * Jupiter_strtoui_nospace(++str, base);
 }
 
+long long Jupiter_strtoll_nospace(const char *str, int base)
+{
+	if (*str != '-') return Jupiter_strtoull_nospace(str, base);
+	return -1 * Jupiter_strtoull_nospace(++str, base);
+}
+
 unsigned int Jupiter_strtoui_nospace(const char *str, int base)
 {
 	unsigned int total = 0;
@@ -666,6 +684,56 @@ unsigned int Jupiter_strtoui_nospace(const char *str, int base)
 	return total;
 }
 
+unsigned long long Jupiter_strtoull_nospace(const char *str, int base)
+{
+	unsigned long long total = 0;
+	int tval;
+	if (*str == '-') return Jupiter_strtoi_nospace(str, base);
+
+	if (*str == '+') str++;
+
+	if (base == 0) // Guess a base.
+	{
+		if (*str == '0')
+		{
+			str++;
+			switch (*str)
+			{
+			case 'X':
+			case 'x':
+				str++;
+				base = 16;
+				break;
+			case 'B':
+			case 'b':
+				str++;
+				base = 2;
+				break;
+			default:
+				base = 8;
+				break;
+			}
+		}
+		else base = 10;
+	}
+	else if (base == 16) // check for optional preceeding hexadecimal prefix.
+	{
+		if (*str == '0')
+		{
+			str++;
+			if (*str == 'x' || *str == 'X') str++;
+		}
+	}
+
+	while ((tval = Jupiter_getBase(*str, base)) != -1)
+	{
+		total = base * total + tval;
+		str++;
+	}
+
+	return total;
+}
+
 double Jupiter_strtod_nospace(const char *str)
 {
 	const int base = 10;
@@ -711,6 +779,16 @@ int Jupiter_strtoi_s(const char *str, size_t length, int base)
 	return Jupiter_strtoi_nospace_s(str, length, base);
 }
 
+long long Jupiter_strtoll_s(const char *str, size_t length, int base)
+{
+	while (length != 0 && isspace(*str))
+	{
+		str++;
+		length--;
+	}
+	return Jupiter_strtoll_nospace_s(str, length, base);
+}
+
 unsigned int Jupiter_strtoui_s(const char *str, size_t length, int base)
 {
 	while (length != 0 && isspace(*str))
@@ -721,6 +799,16 @@ unsigned int Jupiter_strtoui_s(const char *str, size_t length, int base)
 	return Jupiter_strtoui_nospace_s(str, length, base);
 }
 
+unsigned long long Jupiter_strtoull_s(const char *str, size_t length, int base)
+{
+	while (length != 0 && isspace(*str))
+	{
+		str++;
+		length--;
+	}
+	return Jupiter_strtoull_nospace_s(str, length, base);
+}
+
 double Jupiter_strtod_s(const char *str, size_t length)
 {
 	while (length != 0 && isspace(*str))
@@ -731,7 +819,7 @@ double Jupiter_strtod_s(const char *str, size_t length)
 	return Jupiter_strtod_nospace_s(str, length);
 }
 
-signed int Jupiter_strtoi_nospace_s(const char *str, size_t length, int base)
+int Jupiter_strtoi_nospace_s(const char *str, size_t length, int base)
 {
 	if (length == 0) return 0;
 	if (*str != '-') return Jupiter_strtoui_nospace_s(str, length, base);
@@ -802,6 +890,77 @@ unsigned int Jupiter_strtoui_nospace_s(const char *str, size_t length, int base)
 	return total;
 }
 
+long long Jupiter_strtoll_nospace_s(const char *str, size_t length, int base)
+{
+	if (length == 0) return 0;
+	if (*str != '-') return Jupiter_strtoull_nospace_s(str, length, base);
+	return -1 * Jupiter_strtoull_nospace_s(++str, --length, base);
+}
+
+unsigned long long Jupiter_strtoull_nospace_s(const char *str, size_t length, int base)
+{
+	unsigned long long total = 0;
+	int tval;
+	if (length == 0) return total;
+	if (*str == '-') return Jupiter_strtoi_nospace(str, base);
+
+	if (*str == '+')
+	{
+		if (--length == 0) return total;
+		str++;
+	}
+
+	if (base == 0) // Guess a base.
+	{
+		if (*str == '0')
+		{
+			if (--length == 0) return total;
+			str++;
+			switch (*str)
+			{
+			case 'X':
+			case 'x':
+				if (--length == 0) return total;
+				str++;
+				base = 16;
+				break;
+			case 'B':
+			case 'b':
+				if (--length == 0) return total;
+				str++;
+				base = 2;
+				break;
+			default:
+				base = 8;
+				break;
+			}
+		}
+		else base = 10;
+	}
+	else if (base == 16) // check for optional preceeding hexadecimal prefix.
+	{
+		if (*str == '0')
+		{
+			if (--length == 0) return total;
+			str++;
+			if (*str == 'x' || *str == 'X')
+			{
+				if (--length == 0) return total;
+				str++;
+			}
+		}
+	}
+
+	while ((tval = Jupiter_getBase(*str, base)) != -1)
+	{
+		total = base * total + tval;
+		if (--length == 0) return total;
+		str++;
+	}
+
+	return total;
+}
+
 double Jupiter_strtod_nospace_s(const char *str, size_t length)
 {
 	const int base = 10;
diff --git a/Jupiter/Functions.h b/Jupiter/Functions.h
index 39548d2..66bf489 100644
--- a/Jupiter/Functions.h
+++ b/Jupiter/Functions.h
@@ -355,7 +355,9 @@ JUPITER_API int Jupiter_getBase(unsigned char c, int base);
 * @return Interpretation of the string as an integer on success, 0 otherwise.
 */
 JUPITER_API int Jupiter_strtoi(const char *str, int base);
+JUPITER_API long long Jupiter_strtoll(const char *str, int base);
 JUPITER_API unsigned int Jupiter_strtoui(const char *str, int base);
+JUPITER_API unsigned long long Jupiter_strtoull(const char *str, int base);
 
 /**
 * @brief Interpets a string into a floating point decimal number.
@@ -375,7 +377,9 @@ JUPITER_API double Jupiter_strtod(const char *str);
 * @return Interpretation of the string as an integer on success, 0 otherwise.
 */
 JUPITER_API int Jupiter_strtoi_nospace(const char *str, int base);
+JUPITER_API long long Jupiter_strtoll_nospace(const char *str, int base);
 JUPITER_API unsigned int Jupiter_strtoui_nospace(const char *str, int base);
+JUPITER_API unsigned long long Jupiter_strtoull_nospace(const char *str, int base);
 
 /**
 * @brief Interpets a string into a floating point decimal number.
@@ -396,7 +400,9 @@ JUPITER_API double Jupiter_strtod_nospace(const char *str);
 * @return Interpretation of the string as an integer on success, 0 otherwise.
 */
 JUPITER_API int Jupiter_strtoi_s(const char *str, size_t length, int base);
+JUPITER_API long long Jupiter_strtoll_s(const char *str, size_t length, int base);
 JUPITER_API unsigned int Jupiter_strtoui_s(const char *str, size_t length, int base);
+JUPITER_API unsigned long long Jupiter_strtoull_s(const char *str, size_t length, int base);
 
 /**
 * @brief Interpets a string into a floating point decimal number.
@@ -417,7 +423,9 @@ JUPITER_API double Jupiter_strtod_s(const char *str, size_t length);
 * @return Interpretation of the string as an integer on success, 0 otherwise.
 */
 JUPITER_API int Jupiter_strtoi_nospace_s(const char *str, size_t length, int base);
+JUPITER_API long long Jupiter_strtoll_nospace_s(const char *str, size_t length, int base);
 JUPITER_API unsigned int Jupiter_strtoui_nospace_s(const char *str, size_t length, int base);
+JUPITER_API unsigned long long Jupiter_strtoull_nospace_s(const char *str, size_t length, int base);
 
 /**
 * @brief Interpets a string into a floating point decimal number.
diff --git a/Jupiter/Readable_String.h b/Jupiter/Readable_String.h
index 570a9d7..e5f31e5 100644
--- a/Jupiter/Readable_String.h
+++ b/Jupiter/Readable_String.h
@@ -204,7 +204,9 @@ namespace Jupiter
 		* @return Integer representation of the string.
 		*/
 		int asInt(int base = 0) const;
+		long long asLongLong(int base = 0) const;
 		unsigned int asUnsignedInt(int base = 0) const;
+		unsigned long long asUnsignedLongLong(int base = 0) const;
 
 		/**
 		* @brief Interprets the string as a floating-point decimal number.
diff --git a/Jupiter/Readable_String_Imp.h b/Jupiter/Readable_String_Imp.h
index 607d693..4607b9c 100644
--- a/Jupiter/Readable_String_Imp.h
+++ b/Jupiter/Readable_String_Imp.h
@@ -878,6 +878,16 @@ template<typename T> int Jupiter::Readable_String<T>::asInt(int base) const
 	return 0;
 }
 
+template<> long long inline Jupiter::Readable_String<char>::asLongLong(int base) const
+{
+	return Jupiter_strtoll_s(this->ptr(), this->size(), base);
+}
+
+template<typename T> long long Jupiter::Readable_String<T>::asLongLong(int base) const
+{
+	return 0;
+}
+
 template<> unsigned int inline Jupiter::Readable_String<char>::asUnsignedInt(int base) const
 {
 	return Jupiter_strtoui_s(this->ptr(), this->size(), base);
@@ -888,6 +898,16 @@ template<typename T> unsigned int Jupiter::Readable_String<T>::asUnsignedInt(int
 	return 0;
 }
 
+template<> unsigned long long inline Jupiter::Readable_String<char>::asUnsignedLongLong(int base) const
+{
+	return Jupiter_strtoull_s(this->ptr(), this->size(), base);
+}
+
+template<typename T> unsigned long long Jupiter::Readable_String<T>::asUnsignedLongLong(int base) const
+{
+	return 0;
+}
+
 template<> double inline Jupiter::Readable_String<char>::asDouble() const
 {
 	return Jupiter_strtod_s(this->ptr(), this->size());
diff --git a/Release/Jupiter.lib b/Release/Jupiter.lib
index a4cb876..918c480 100644
Binary files a/Release/Jupiter.lib and b/Release/Jupiter.lib differ