In the recent era there can only be one Pope at a time. The title is conferred until death or abdication, when a new election identifies the next pope.
As an aside, In the 2000+ year history of the Roman Catholic church there have been in the past schisms, fueds, and even dueling popes claiming different authorities to be the pope (often called Antipopes.)
When the office of the Holy See is vacant (i.e. no current pope), the college of cardinals convenes and elects the next Bishop of Rome (which is the title that confers papacy.) For more information on this process see this Wikipedia article on Papal Conclaves.
http://en.wikipedia.org/wiki/Papal_conclave
Popes do not have 'terms.' Once elected, they serve either until they die or resign.
I am sure there are many popes in Heaven but am equally sure that there are a number of popes burning in hell.
There have been 15 popes named Benedict. Please be specific.
the popes
there is only one pope at a time, he) will serve until his death.
The majority of lists of popes show Pope Francis as pope number 266.
About 80 popes have been canonized and a number of others are at various stages of the canonization process.
While a number of popes are buried in St. Peter's Basilica, not all of them are buried there.
263
Pope Leo I was number 45.
There are a number of popes named Alexander. Please be specific.
Blessed Pope Pius IX (the 9th) was number 256 in the list of Popes! He was Pope from 1846-1878, and now has the title "Blessed".