193201

Properties

Appears in sequences

• Indices of prime Lucas numbers.at n=50A001606
• Primes that are concatenations of n with n + 8.at n=19A032631
• Numbers k such that floor(phi^k) is prime, where phi is the golden ratio.at n=50A059791
• Primes p such that floor(phi^p) is prime.at n=46A168033
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 7*b^2.at n=26A216537
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 3*b^2.at n=30A216554
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 2*b^2.at n=41A216562
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 5*b^2.at n=9A216563
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + b^2.at n=17A216567
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 6*b^2.at n=13A216571
• Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 10*b^2.at n=24A216575
• Centered 15-gonal (or pentadecagonal) primes.at n=32A264822
• Prime numbersat n=17433