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Old 2019-05-01, 07:34   #10
robert44444uk
 
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Jun 2003
Oxford, UK

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For my 6 twins in 81 combination (0,2,6,8,36,38,48,50,66,68,78,80) I found no examples testing up to 6.5e12

For the other 6 in 81 combination (0,2,12,14,30,32,42,44,72,74,78,80) I found 3 examples (29, 2,595,051,759,329, and 4,073,652,347,549) testing up to 6.37e12

Last fiddled with by robert44444uk on 2019-05-01 at 07:35
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