147073

Properties

Appears in sequences

• Primes of form (p^x - 1)/(p^y - 1), p prime.at n=28A003424
• Prime numbers that are the sum of the divisors of some n.at n=22A023195
• Primes of the form p^2 + p + 1 when p is prime.at n=13A053183
• Terms of A000203 that are prime.at n=23A062700
• Primes of the form 4*k^2 - 10*k + 7 with k positive.at n=46A073337
• Primes that can be written as 1+p+p^k, p prime and k > 1.at n=28A084444
• Primes of the form 1+(1+p)*p^e, p prime and e>0.at n=26A087196
• Record values of A062700.at n=16A100382
• Primes p such that p^2*q^2*r^2 + 12 and p^2*q^2*r^2 - 12 are primes where q and r are next two primes after p.at n=38A240725
• Primes p of the form sigma(2k-1) for a number k.at n=17A247837
• Odd primes p with the property that gcd(ord_p q: prime q divides p-1) = 1.at n=37A295975
• Primes q appearing in A330832: that is, if A330832(n)=p*q, where p is prime and q=(p^k-1)/(p-1) is prime, then a(n)=q.at n=27A330835
• Primes of the form (p^k)^2 + p^k + 1 with prime p and positive integer k.at n=15A342691
• Initial term of a set of consecutive primes {p1, p2, p3, p4} such that Sum_{k=p1..p2} d(k) = Sum_{k=p2..p3} d(k) = Sum_{k=p3..p4} d(k), where d(k) is the number of divisors function A000005.at n=1A353553
• Prime numbersat n=13596