This is in the spirit of the What is a number/Phrase™ series started by JLee with a special brand of Phrase™ and Number™ puzzles.

If a number conforms to a special rule, I call it an EH-number™.
If a number does not conform to the rule, I call it an OH-number™

Use the following examples (in CSV format) below to find the rule.

EH-numbers™, OH-numbers™

8,         4
588,       234
4556,      4557
1233,      1234
7961,      0998
45635,     45636
34567,     93456
8656783,   8656784
2534534,   2534535
8359081,   8359089
8359082,   8359080

  • 1
    $\begingroup$ Does having a 0 at the front of 0998 change the eh-iness or the oh-iness of the number? $\endgroup$
    – boboquack
    Oct 27 '16 at 8:40
  • $\begingroup$ @boboquack : yes it change. $\endgroup$ Oct 27 '16 at 8:42
  • $\begingroup$ Then is it supposed to be there? $\endgroup$
    – boboquack
    Oct 27 '16 at 8:45
  • $\begingroup$ @boboquack : yes 998 is EH, 0998 is OH $\endgroup$ Oct 27 '16 at 8:48
  • 1
    $\begingroup$ Somebody tell me I'm not the only one to read the question and immediately think "Hip hop hurr-EH! OH! EH! OH!" $\endgroup$
    – Kevin
    Oct 27 '16 at 18:33

My first guess:

An EH-number has an even number of holes and an OH-number has an odd number of holes.

EH and OH stand for:

Even-holed and Odd-holed

Tip for future (assuming the answer is correct):

The font used in the CSV makes a 0 look like it has 2-holes, not the intended 1 (which by counting I think you wanted). Also, 9980 may have been better than 0998, it looks unsuspicious.

  • $\begingroup$ +1 Not sure if this is the expected answer, but it checks out. good job. Also, he probably made the numbers suspicious on purpose to give hints. $\endgroup$ Oct 27 '16 at 8:51
  • $\begingroup$ Good advice as well $\endgroup$ Oct 27 '16 at 11:36

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