First numbers that belong to both sets:
31,
71,
73,
97,
311,
733,
743,
751,
761,
941,
953,
971,
983,
991,
3221,
7321,
7433,
7643,
9221,
9421,
9521,
9533,
9551,
9643,
9661,
9721,
9833,
9871,
9883,
9931,
9941,
72221,
73331,
74411,
74441,
75211,
75431,
75541,
76651,
77431,
77521,
77611,
77711,
94111,
94441,
95111,
96221,
96431,
96443,
96553,
97441,
97511,
97651,
97711,
98221,
98411,
98533,
98543,
98621,
98711,
98731,
98873,
98887,
99431,
99611,
99661,
99721,
99877,
99881,
721111,
732211,
733111,
733331,
733333,
742211,
743111,
743221,
754333,
755311,
755551,
764111,
765533,
766111,
766321,
766333,
775441,
776651,
777221,
777421,
777431,
777433,
777541,
777551,
777641,
777731,
777761,
911111,
955211,
965551,
966431,
966521,
966661,
972221,
973321,
973331,
974411,
974443,
975551,
976411,
976553,
977761,
982211,
984421,
985531,
986411,
986533,
986543,
986633,
988711,
988763,
994321,
995443,
995531,
995551,
996431,
996551,
997111,
997541,
997553,
997651,
997741,
997751,
998311,
998633,
998651,
998743,
998831,
998861,
999331,
999431,
999631,
999653,
999773,
999853,
999931,
999983,
3333311,
7441111,
7443221,
7444441,
7533221,
7541111,
7544431,
7554311,
7555211,
7555421,
7632211,
7642111,
7652111,
7653211,
7654441,
7655443,
7655521,
7661111,
7663211,
7664311,
7665431,
7666543,
7733321,
7744441,
7751111,
7753321,
7754321,
7754443,
7763311,
7764221,
7765553,
7766221,
7766621,
7772221,
7773211,
7773331,
7775533,
7777421,
7777543,
9331111,
9332111,
9433111,
9442211,
9543311,
9551111,
9554333,
9554431,
9555521,
9632111,
9654331,
9654443,
9665441,
9666311,
9666551,
9733211,
9743311,
9765211,
9765433,
9775553,
9776441,
9776651,
9777331,
9777661,
9777773,
9832111,
9854431,
9863221,
9863311,
9865411,
9865511,
9872111,
9874441,
9875321,
9875443,
9877633,
9886211,
9887333,
9887441,
9887611,
9887641,
9888443,
9888521,
9888533,
9888661,
9888733,
9888761,
9955441,
9955541,
9965311,
9965533,
9966511,
9966533,
9973331,
9974431,
9974443,
9976541,
9982211,
9984431,
9985111,
9987511,
9987533,
9988211,
9988633,
9988721,
9994333,
9994441,
9995333,
9995411,
9996211,
9997621,
9997643,
9998321,
9998543,
9998741,
9998887,
9999221,
9999433,
9999931,
9999943,
9999971,
33322111,
71111111,
74422211,
75432221,
75522221,
75544111,
75544433,
75554411,
75555551,
76433221,
76553311,
76554311,
76554431,
76654433.
Some larger examples :
99944431,
99955411,
99964211,
99964411,
99965443,
99966631,
99974321,
99975541,
99976511,
99977431,
99977611,
99977651,
99985441,
99986111,
99986641,
99987721,
99988633,
99993331,
99996653,
99999643.