28409

Properties

Appears in sequences

• Primes p such that the largest prime factor of p^5 + 1 is less than p.at n=9A102327
• Primes of the form 9*k^4 - 204*k^3 + 1777*k^2 - 7038*k + 10729, for k >= 0, listed by increasing k.at n=13A117090
• Beginnings of maximal chains of primes with four members (three links).at n=11A152867
• Primes of the form 10n^2+6n+1.at n=21A154409
• Greater of two consecutive primes, p < q, such that both p*q+p-q and p*q-p+q are prime numbers.at n=35A154552
• Numbers k that divide the sum of digits of 13^k.at n=45A175525
• Primes p such that p+2 and q are primes, where q is concatenation of binary representations of p and p+2: q = p * 2^L + p+2, where L is the length of binary representation of p+2: L=A070939(p+2).at n=40A232238
• Primes p such that q=p^2+p+1 is prime and (q^2+q+1)/3 is prime.at n=33A322748
• Number of compositions (ordered partitions) of n into distinct parts >= 6.at n=57A339104
• Primes p such that 2*p+q and 2*p+r are prime, where q and r are the next two primes after p.at n=47A340225
• Prime numbersat n=3091