363541domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(1)=433640083; a(n+1)= the largest prime factor of a(n)+b(n)+c(n), where a(n)<b(n)<c(n) and a(n),b(n) and c(n) are three consecutive primes.at n=19A117631Prime numbersat n=31026