Prime Curios!: 8

8
(another Prime Pages' Curiosity)

Curios:

Curios Search:
Participate:

Single Curio View: (Seek other curios for this number)

For n > 8, prime(n) >

(n) + sigma(n), so 8 is the only number n such that prime(n) =

(n) + sigma(n). [Firoozbakht]

Submitted: 2009-10-06 18:47:04; Last Modified: 2009-10-06 19:47:34.