Extract unique value from number

[sumansau007]

I have a different type of data in a particular cell..
Ex:
Good books ltd 004bm14356890001 Mauritius.

Now i have to extract the unique no of 16 digits.

Now few things...
I have such data approx 50000 rows..
.unique number can appear anywhere in the data, either in beginning or middle or at the end.....
The unique number can begin with any number or text....

Common thing is 16 digit length....


Please provide me a formula to get the result.

I have tried
=if(A2,Find("00", A2),16)

This formula is limited to beginwith condition. Please advise if this possible to avoid this.


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