[D66] Digit Curios!

[René Oudeweg]

Henry Ernest Dudeney's 3-by-3 magic square (sum=111) contains "1"
nonprime:

67 01 43
13 37 61
31 73 07




On 2/14/24 23:12, René Oudeweg wrote:
> L.S.
> 
> 
> Henry Ernest Dudeney's 3-by-3 magic square (sum=111) contains "1"
> nonprime:
> 
> 67 	01
> 	43
> 13
> 	37
> 	61
> 31
> 	73
> 	07
> 
> 
> R.O.
> 
> 
> Nieuwe publicatie:
> 
> 
>