11898664849
domain: N
Appears in sequences
- Cyclotomic polynomials at x=7.at n=21A019325
- Zsigmondy numbers for a = 7, b = 1: Zs(n, 7, 1) is the greatest divisor of 7^n - 1^n (A024075) that is relatively prime to 7^m - 1^m for all positive integers m < n.at n=20A064083
- a(n) = largest prime factor of 7^n-1.at n=20A074249
- a(n) = n^12 - n^11 + n^9 - n^8 + n^6 - n^4 + n^3 - n + 1.at n=7A269483
- Primes of the form Phi(k, -7), where Phi is the cyclotomic polynomial.at n=12A291993
- Primes of the form Phi(k, 7), where Phi is the cyclotomic polynomial.at n=4A292011
- Smallest primitive prime factor of 7^n-1.at n=20A379640