<Tr> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 6 </Th> <Th> 7 </Th> <Th> 8 </Th> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 5 </Td> <Td> 6 </Td> <Td> 7 </Td> <Td> 8 </Td> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> </Td> <Td> 6 </Td> <Td> 10 </Td> <Td> 15 </Td> <Td> 21 </Td> <Td> 28 </Td> <Td> 36 </Td> </Tr>

What are some applications of perfect power numbers