A small rock of panamium-743
Pekka Pyykko's depiction of extended periodic table with panamium (172) just underneath Oganesson.

Panamium is synthetic chemical element in the extended periodic table; it has symbol Pan, atomic number 172 and mass of 743 u. It's a noble gas lying just underneath element 118, Oganesson. Panamium is commonly called noble stone due to It being a solid at room temperature but being a noble gas.