368089

Properties

Appears in sequences

• Largest prime factor of 3^(2n+1) - 1.at n=10A002591
• Cyclotomic polynomials at x=3.at n=21A019321
• Zsigmondy numbers for a = 3, b = 1: Zs(n, 3, 1) is the greatest divisor of 3^n - 1^n (A024023) that is relatively prime to 3^m - 1^m for all positive integers m < n.at n=20A064079
• Largest prime factor of 3^n - 1.at n=20A074477
• a(n) = sigma_3(n^3)/sigma(n^3).at n=8A077454
• Let Cn(x) be the n-th cyclotomic polynomial; a(n) is the first prime Cn(x) after Cn(1).at n=20A085399
• List of primitive prime divisors of the numbers (3^k-1)/2 (A003462) for k>=2, in order of their occurrence.at n=24A129733
• 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=20A143663
• Primes of the form Phi_k(3), the k-th cyclotomic polynomial evaluated at 3.at n=10A211874
• Primitive prime factors of the cyclotomic polynomial sequence Phi(7,k) in the order in which they occur.at n=32A256146
• a(n) = n^12 - n^11 + n^9 - n^8 + n^6 - n^4 + n^3 - n + 1.at n=3A269483
• Largest prime factor of 9^n - 1.at n=20A274909
• Primes of the form Phi(k, -3), where Phi is the cyclotomic polynomial.at n=15A292004
• Primes of the form Phi(k, 3), where Phi is the cyclotomic polynomial.at n=10A292007
• a(n) is the first prime value of the n-th cyclotomic polynomial.at n=20A307687
• Prime numbersat n=31389