Projections (Star Trek: Voyager) Projections (Star Trek: Voyager) "Projections" is the 19th (3rd in the ) episode of the American science fiction television program "". Originally slated for the first season, the episode originally aired on September 11, 1995, and tells the story of having an identity crisis on the holodeck regarding whether he or the world around him is the illusion. Brannon Braga compared "Projections" to the work of René Descartes, and wrote the episode around the premise of "cogito ergo sum", questioning whether the Doctor or the "Voyager" is the illusion. Beating out LeVar Burton (Geordi La Forge) for the guest appearance,
Descartes number only one currently known. If is an odd almost perfect number, that is, and is taken as a 'spoof' prime, then is a Descartes number, since . If were prime, would be an odd perfect number. Descartes number In number theory, a Descartes number is an odd number which would have been an odd perfect number, if one of its composite factors were prime. They are named after René Descartes who observed that the number would be an odd perfect number if only were a prime number, since the sum-of-divisors function for would satisfy, if 22021 were prime, where we