234750601

Properties

Appears in sequences

• a(n) = n^6 - n^5 + n^4 - n^3 + n^2 - n + 1.at n=25A060888
• Zsigmondy numbers for a = 5, b = 1: Zs(n, 5, 1) is the greatest divisor of 5^n - 1^n (A024049) that is relatively prime to 5^m - 1^m for all positive integers m < n.at n=27A064081
• Primes of the form sigma_4(k)/sigma_2(k), arising in A066109.at n=12A066110
• Largest prime factor of 5^n + 1.at n=14A074478
• Largest prime factor of 5^n - 1.at n=27A074479
• a(n) is the least prime such that the multiplicative order of 5 mod a(n) equals n.at n=27A143665
• Greatest prime factor of n^7+1.at n=24A240550
• Primes of the form n^6 - n^5 + n^4 - n^3 + n^2 - n + 1.at n=11A245427
• a(n) = n^12 - n^10 + n^8 - n^6 + n^4 - n^2 + 1.at n=5A270204
• Primes of the form Phi(k, -5), where Phi is the cyclotomic polynomial.at n=7A291998
• Primes of the form Phi(k, 5), where Phi is the cyclotomic polynomial.at n=7A292009
• Prime numbersat n=12889015