Taken: 2, 3, 5, 9, 11, 12, 13, 15, 18, 21, 22, 23, 24, 25, 27, 28, 29, 45, 56, 130, 1300, 13000, 130000, 1300000, 13000000 Free spots: 1, 4, 6, 7, 8, 10, 14, 16, 17, 19, 20, 26, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 132, 133, 135, 139, 1302, 1303, 1305, 1309, 1311, 1312, 1313, 1315, 1318, 1321, 1322, 1323, 1324, 1325, 1327, 1328, 1329, 1345, 1356, 13002, 13003, 13005, 13009, 13011, 13012, 13013, 13015, 13018, 13021, 13022, 13023, 13024, 13025, 13027, 13028, 13029, 13045, 13056, 13130, 13132, 13133, 13135, 13139, 130002, 130003, 130005, 130009, 130011, 130012, 130013, 130015, 130018, 130021, 130022, 130023, 130024, 130025, 130027, 130028, 130029, 130045, 130056, 131300, 131302, 131303, 131305, 131309, 131311, 131312, 131313, 131315, 131318, 131321, 131322, 131323, 131324, 131325, 131327, 131328, 131329, 131345, 131356, 1300002, 1300003, 1300005, 1300009, 1300011, 1300012, 1300013, 1300015, 1300018, 1300021, 1300022, 1300023, 1300024, 1300025, 1300027, 1300028, 1300029, 1300045, 1300056, 1300130, 1300132, 1300135, 1300139, 1301300, 1301302, 1301303, 1301305, 1301309, 1301311, 1301312, 1301313, 1301315, 1301318, 1301321, 1301322, 1301323, 1301324, 1301325, 1301327, 1301328, 1301329, 1301345, 1301356, 1313000, 1313002, 1313003, 1313005, 1313009, 1313011, 1313012, 1313013, 1313015, 1313018, 1313021, 1313022, 1313023, 1313024, 1313025, 1313027, 1313028, 1313029, 1313045, 1313056, 1313130, 1313132, 1313133, 1313135, and 1313139
