Type of number    

 Form

 Mersenne

 (2^p-1)/f    with p prime   

 View 12 largest  

 Fibonacci

 U(n)/f    with n prime

 View 12 largest  

 Lucas

 V(n)/f    with n prime

 View 14 largest  

 Primorial ±1

 (p# ±1)/f

 View 11 largest  

 Phi(x, n!)

 Phi(x, n!)/f

 View 5 largest  

 Cullen

 (n ^. 2ⁿ+1)/f

 View largest  

 Woodall

 (n ^. 2ⁿ-1)/f

 View largest