398407domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime factor of the semiprime 2^A165767(n)-A165767(n).at n=21A165768Number of (w,x,y,z) with all terms in {1,...,n} and w^2<x*y*z.at n=26A212063Prime numbersat n=33734