167119domain: NPropertiesPrimalityPrimeyesAppears in sequencesUpper twin prime-indexed primes in the sequence of prime(prime(i)).at n=8A228055Primes of the form p^4+q^4+r^4-4 with p<=q<=r all prime.at n=24A256380Concatenate the n-th prime with the n-th semiprime.at n=38A262428Prime numbersat n=15271