153953

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 46.at n=8A031634
• Middle of 3 consecutive prime numbers such that p1*p2*p3+d1+d2+1=average of twin prime pairs, d1(delta)=p2-p1,d2(delta)=p3-p2.at n=24A153407
• Primes p such that p-+1, p-+3, p-+5 are not squarefree.at n=31A155145
• Smallest primitive prime factor of 12^n-1.at n=31A252170
• a(n) is the shyest prime in base n.at n=18A272043
• a(n) is the shyest prime in base n.at n=37A272043
• Prime factors of generalized Fermat numbers of the form 12^(2^m) + 1 with m >= 0.at n=13A273950
• Smallest prime dividing 12^n + 1.at n=16A366719
• Prime numbersat n=14186