144481

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 84.at n=2A031672
• Largest prime dividing the n-th Lucas number (A000032); 1 when no such prime exists.at n=43A079451
• Primes of the form 16*m^2 + 81, m=1,2,3,...at n=16A087861
• Primes containing the string 444.at n=29A166582
• Second-smallest prime factor of the n-th Lucas number (beginning with 2), if composite, or 1 otherwise.at n=43A194086
• Primes of the form n^2 + 81.at n=34A256775
• Primes having only {1, 4, 8} as digits.at n=30A260270
• Prime numbersat n=13381