9^15 [] 29^11
not sure what you are asking
$${{\mathtt{9}}}^{{\mathtt{15}}} = {\mathtt{205\,891\,132\,094\,649}}$$
$${{\mathtt{29}}}^{{\mathtt{11}}} = {\mathtt{12\,200\,509\,765\,705\,829}}$$
9^15 < 29^11