530713

Properties

Appears in sequences

• Largest prime factor of 9^n + 1.at n=9A002592
• a(n) = largest prime factor of n^n + 1.at n=8A007571
• Cyclotomic polynomials at x=9.at n=18A019327
• Cyclotomic polynomials at x=-9.at n=9A020508
• 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 53.at n=26A031641
• a(n) = n^4 - n^2 + 1.at n=27A060886
• a(n) = n^6 - n^3 + 1.at n=9A060891
• a(n) = n^12 - n^6 + 1.at n=3A060896
• Largest prime factor of 3^n + 1.at n=18A074476
• Largest prime factor of 3^n - 1.at n=35A074477
• Numbers of the form (3^s+1)/(3^r+1) for s > 1, 1 <= r <= s-1.at n=16A079672
• Smallest prime divisor of n^4-n^2+1.at n=25A125258
• a(n) is the least prime such that the multiplicative order of 3 mod a(n) equals n, or a(n)=1 if no such prime exists.at n=35A143663
• 9^n - 3^n + 1.at n=6A155614
• Primes of the form k^6 - k^3 + 1.at n=2A175170
• Smallest prime factor of (n^n)^2 + 1 having the form k*n+1.at n=25A208399
• Primes of the form Phi_k(3), the k-th cyclotomic polynomial evaluated at 3.at n=12A211874
• Primes of the form Phi(phi(k),3), the phi(k)-th Cyclotomic polynomial evaluated at 3, where phi is the Euler totient function.at n=5A211875
• Greatest prime factor of n^6+1.at n=26A240549
• Greatest prime factor of n^9+1.at n=8A240552