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Ultimate age

\ˈʌltəmət\ \eɪʤ\

The ultimate age of life table or longevity base table is the age at which qx is set to 100%. There is not conclusive evidence for an age where it is certain that someone will die in the following year, so the use of an ultimate age is a systems convenience to close-off the table and make calculations easier. The ultimate age implicitly defines an age assumed to be the oldest age to which it is possible to live. Given that Jeanne Calment lived to 116, the ultimate age of most tables is set somewhere between 115 and 125.

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