145935688930domain: NAppears in sequencesLeast positive integer m with pi(m*n) = m + n, where pi(x) denotes the number of primes not exceeding x.at n=23A247600Least number m such that A247600(m) = n.at n=23A281197Largest positive integer m with pi(m*n) = m + n, where pi(x) denotes the number of primes not exceeding x.at n=23A303910