Complete the series on this set of numbers [closed]

Here is one that I can't seem to solve: Complete the following series:

529, 531, 542, 544, 561, 558


closed as off-topic by SteveV, Rubio♦Jul 19 at 23:23

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This looks like a puzzle you found elsewhere. For content you did not create yourself, proper attribution is required. If you have permission to repost this, please edit to include (at minimum) where it came from, then vote to reopen. Posts which use someone else's content without attribution are generally deleted." – SteveV, Rubio
If this question can be reworded to fit the rules in the help center, please edit the question.

• Can you please reference the original source of this series if you didn't create it yourself – Adam Jul 19 at 19:36