432923domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes n of the form 10000p+100q+r with primes p, q and r, 98>p>q>r>10.at n=19A168500Least m such that the Collatz (3x+1) iteration of m has exactly n increasing peak values.at n=34A221470Prime numbersat n=36395