regarding property of an integer??

general
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1

what could be the property of integers having all digits even.

2

The sum of all digits will certainly be even

3

There would be only one prime number.

4

@ganeshrockz

Is there any way to find nth such number

5

@sheikh_1997

Is there any way to fund nth such number.

6

Find some intuitive bijection with numbers in base 5. It will also answer your comment answer

7

just dont answer this question. it is hint to some active competition.

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