732541

Properties

Appears in sequences

• Primes of form (p^x - 1)/(p^y - 1), p prime.at n=39A003424
• Prime numbers that are the sum of the divisors of some n.at n=32A023195
• Number of sublattices of index n in generic 5-dimensional lattice.at n=28A038992
• a(n) = n^4 + n^3 + n^2 + n + 1.at n=29A053699
• Terms of A000203 that are prime.at n=34A062700
• Primes of the form sigma(m^2) where m is a composite number ordered by values m.at n=12A065403
• Z(S_m; sigma[1](n), sigma[2](n),..., sigma[m](n)) where Z(S_m; x_1,x_2,...,x_m) is the cycle index of the symmetric group S_m and sigma[k](n) is the sum of k-th powers of divisors of n; m=4.at n=28A068021
• Greatest prime factor of prime(n)^n - 1.at n=8A069460
• Smallest prime of the form (n^k-1)/(n-1), or 0 if no such prime exists.at n=27A084738
• Primes of the form k^4 + k^3 + k^2 + k + 1.at n=10A088548
• a(n) = 1 + prime(n) + prime(n)^2 + prime(n)^3 + prime(n)^4.at n=9A131992
• a(n) = Sum_{d|n} Möbius(n/d)*d^5/phi(n).at n=28A160893
• Primes of the form p^4 + p^3 + p^2 + p + 1, where p is prime.at n=5A190527
• a(n) = sigma(n^4).at n=28A202994
• Minimal order of degree-n irreducible polynomials over GF(29).at n=4A218364
• a(n) = (29^n - 1)/28.at n=5A218732
• Primes of the form (k^p-1)/(k-1) not having representation in the form (m^q+1)/(m+1), where k,m > 1 and p,q > 2.at n=14A225148
• Primes p of the form sigma(2q-1) where q is a prime.at n=10A247836
• Primes p of the form sigma(2k-1) for a number k.at n=26A247837
• Primes p such that there is prime q with sigma(q+2) = p.at n=14A247955