In each of the following number series, one wrong number is given, find out that number.
11, 31, 69, 131, 223, 352, 521
1
69
2
131
3
223
4
352
5
521
In each of the following number series, one wrong number is given, find out that number.
11, 31, 69, 131, 223, 352, 521