What is "sekhemkhet"

Sekhemkhet (also read as Sechemchet) was an ancient Egyptian king ( pharaoh) of 3rd dynasty during the Old Kingdom. His reign is thought to have been from about 2648 BC until 2640 BC. He is also known under his later traditioned birth name Djoser-tety and under his Hellenized name Tyreis (by Manetho; derived from Teti in the Abydos king list). He was probably the brother or eldest son of king Djoser. Little is known about this king, since he ruled for only a few years. However, he erected a step pyramid at Saqqara and left behind a well known rock inscription at Wadi Maghareh ( Sinai Peninsula).