Let {P
n
}
n⩾0 be the Padovan sequence with initial conditions P
0=0, P
1=1, and P
2=1 and the recurrence relation P
n+3=P
n+1 + P
n
. Its companion sequence is known as the Perrin sequence {E
n
}
n⩾0 that satisfies the same above recurrence relation with the initial conditions E
0=3, E
1=0 and E
2=2. In this paper, we determine all Padovan and Perrin numbers that are concatenations of two distinct base b repdigits with 2 ⩽ b ⩽ 9. As corollary, we prove that the largest Padovan and Perrin numbers which can be representable as a concatenations of two distinct base b repdigits are
P
26
=
816
=
2244
‾
7
$ P_{26}=816=\overline{2244}_7 $
and
E
24
=
853
=
31111
‾
4
$ E_{24}=853=\overline{31111}_4 $
.
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