430697

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 69.at n=9A031657
• Smallest prime factor of 3^n+1 having the form 2*k*n+1.at n=26A189241
• Smallest primitive prime factor of 9^n-1.at n=27A379642
• Prime numbersat n=36206