In each of the following number series, the wrong number is given, find out that number.
171, 172, 346, 1031, 4168, 20845
1
171
2
1031
3
4168
4
20845
5
346
In each of the following number series, the wrong number is given, find out that number.
171, 172, 346, 1031, 4168, 20845