PRP to base 3,5 and 7.
A 'SUPP' or 'Smoothly Undulating Palindromic Prime'.
Ref.: file 'undulat.htm' at 'www.worldofnumbers.com'.
Found using PFGW Version 20040728.Win_Stable (v1.2 RC1) [FFT v23.8]

To be completed...