In each of the following number series, a wrong number is given, find out that number.
2, 13, 27, 113, 561, 3369, 23581
1
13
2
27
3
113
4
3369
5
561
In each of the following number series, a wrong number is given, find out that number.
2, 13, 27, 113, 561, 3369, 23581