Mr. Cogito Mr. Cogito Mr. Cogito Mr. Cogito is a character created by Zbigniew Herbert, a Polish poet and essayist. He first appears in a poem entitled "The Envoy of Mr. Cogito" ("Przesłanie Pana Cogito") published in 1973. Initially Mr. Cogito was an Everyman, a universal element of humanity sharing his opinions on various aspects of life and existence. However, the more he says, the more disembodied he appears, and becomes transformed into an ethical symbol and a metaphor of the tough choices we have to make between good and evil. The character's name originates from Descartes' famous phrase, "Cogito ergo sum."
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