253442899domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the least number such that bigomega(a(n)) = bigomega(R(a(n)))/n, where R(n) is the digit reverse of n and bigomega(n) is the number of prime divisors of n counted with multiplicity.at n=24A284496Prime numbersat n=13857281