diff --git a/.gitignore b/.gitignore
index 32dcdee..cf2580d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .vs
 out
+3rdparty
 
 *.json
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 33ce1c4..89d258b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,31 @@
-# CMakeList.txt : Top-level CMake project file, do global configuration
-# and include sub-projects here.
-#
-cmake_minimum_required (VERSION 3.8)
+cmake_minimum_required (VERSION 3.8)
 
-project ("GMP++")
+project ("GM3p")
+
+set(GMP_INCLUDE_DIR "" CACHE PATH "Path to the directory containing 'gmp.h'")
+
+if(CMAKE_BUILD_TYPE EQUAL "DEBUG")
+	set(GMP_LIBRARY "" CACHE FILEPATH "Path to the gmp library")
+else(CMAKE_BUILD_TYPE EQUAL "RELEASE")
+	set(GMP_LIBRARY "" CACHE FILEPATH "Path to the gmpDebug library")
+endif()
+
+set(ENABLE_TEST_PROJ FALSE CACHE BOOL "Enable the testing project (usually not needed)")
+
+add_library(gm3p STATIC
+	"include/gm3p_int.hpp" "src/gm3p_int.cpp"
+)
+
+target_include_directories(gm3p PUBLIC
+	include
+	${GMP_INCLUDE_DIR}
+)
+
+target_link_libraries(gm3p PUBLIC
+	${GMP_LIBRARY}
+)
 
 # Include sub-projects.
-add_subdirectory ("GMP++")
+if(ENABLE_TEST_PROJ)
+	add_subdirectory(testapp)
+endif()
\ No newline at end of file
diff --git a/include/gm3p.hpp b/include/gm3p.hpp
new file mode 100644
index 0000000..48fb703
--- /dev/null
+++ b/include/gm3p.hpp
@@ -0,0 +1,4 @@
+#pragma once
+#include <iostream>
+
+#include "gm3p_int.hpp"
\ No newline at end of file
diff --git a/include/gm3p_int.hpp b/include/gm3p_int.hpp
new file mode 100644
index 0000000..d150fdc
--- /dev/null
+++ b/include/gm3p_int.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "gmp.h"
+
+namespace gm3p
+{
+	class gInt
+	{
+	public:
+		gInt();
+		gInt(mpz_t init);
+		gInt(long int init);
+		gInt(const char* init, int base);
+		~gInt();
+
+		gInt& operator=(const gInt& other);
+
+		friend gInt operator+(const gInt& left, const gInt& right);
+		friend gInt operator-(const gInt& left, const gInt& right);
+		friend gInt operator*(const gInt& left, const gInt& right);
+		friend gInt operator/(const gInt& left, const gInt& right);
+
+		friend std::ostream& operator<<(std::ostream& os, const gInt& value);
+
+	private:
+		mpz_t value;
+	};
+}
\ No newline at end of file
diff --git a/src/gm3p_int.cpp b/src/gm3p_int.cpp
new file mode 100644
index 0000000..e8daff3
--- /dev/null
+++ b/src/gm3p_int.cpp
@@ -0,0 +1,71 @@
+#include "gm3p.hpp"
+
+namespace gm3p
+{
+	gInt::gInt()
+	{
+		mpz_init(value);
+	}
+
+	gInt::gInt(mpz_t init) 
+		: gInt::gInt()
+	{
+		mpz_set(value, init);
+	}
+
+	gInt::gInt(long int init) :
+		gInt::gInt()
+	{
+		mpz_set_si(value, init);
+	}
+
+	gInt::gInt(const char* init, int base) :
+		gInt::gInt()
+	{
+		mpz_set_str(value, init, base);
+	}
+
+	gInt::~gInt()
+	{
+		mpz_clear(value);
+	}
+
+	gInt& gInt::operator=(const gInt& other)
+	{
+		mpz_set(this->value, other.value);
+	}
+
+	gInt operator+(const gInt& left, const gInt& right)
+	{
+		gInt ret;
+		mpz_add(ret.value, left.value, right.value);
+		return ret;
+	}
+
+	gInt operator-(const gInt& left, const gInt& right)
+	{
+		gInt ret;
+		mpz_sub(ret.value, left.value, right.value);
+		return ret;
+	}
+
+	gInt operator*(const gInt& left, const gInt& right)
+	{
+		gInt ret;
+		mpz_mul(ret.value, left.value, right.value);
+		return ret;
+	}
+
+	gInt operator/(const gInt& left, const gInt& right)
+	{
+		gInt ret;
+		mpz_div(ret.value, left.value, right.value);
+		return ret;
+	}
+	std::ostream& operator<<(std::ostream& os, const gInt& value)
+	{
+		static char* buf;
+		gmp_asprintf(&buf, "%Zd", value);
+		os << buf;
+	}
+}
\ No newline at end of file
diff --git a/testapp/CMakeLists.txt b/testapp/CMakeLists.txt
new file mode 100644
index 0000000..970d34c
--- /dev/null
+++ b/testapp/CMakeLists.txt
@@ -0,0 +1,13 @@
+add_executable(testapp
+	"main.cpp"
+)
+
+target_include_directories(testapp PUBLIC
+	${GMP_INCLUDE_DIR}
+	${CMAKE_SOURCE_DIR}/include
+)
+
+target_link_libraries(testapp PUBLIC
+	${GMP_LIBRARY}
+	gm3p
+)
\ No newline at end of file
diff --git a/testapp/main.cpp b/testapp/main.cpp
new file mode 100644
index 0000000..2f3cf9b
--- /dev/null
+++ b/testapp/main.cpp
@@ -0,0 +1,17 @@
+#include "gm3p.hpp"
+
+#include <iostream>
+
+using namespace gm3p;
+
+int main(int argc, char** argv)
+{
+	gInt a("12234234234095780349859034869034635235", 10);
+	gInt b("123534622305820985092875207398734234753", 10);
+
+	gInt c = a * b;
+
+	std::cout << a << " * " << b << " = " << c << std::endl;
+
+	return 0;
+}
\ No newline at end of file