[seqfan] {5, 235, 72335}^2 = {25, 55225, 5232352225}

[zak seidov]

Dear SeqFans,

Are 5, 235, & 72335
 
the only numbers n such that n and n^2 use only prime digits:

{5, 235, 72335}^2 = {25, 55225, 5232352225}

thx, zak