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Old 2018-12-03, 13:14   #4
ATH
Einyen
 
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Dec 2003
Denmark

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If a,b has to be prime:
32 - 3 = 23 - 2
133 - 13 = 37 - 3

otherwise:
62 - 6 = 25 - 2
152 - 15 = 63 - 6
162 - 16 = 35 - 3
912 - 91 = 213 - 2
2802 - 280 = 57 - 5
49302 - 4930 = 305 - 30

Last fiddled with by ATH on 2018-12-03 at 13:14
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