Thread: Tetraproths
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Old 2006-03-03, 01:03   #5
Jens K Andersen
 
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Feb 2006
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Including larger tuplets, there are around 350 titanic twins in the complete Prime Pages database.
This is far too few to expect a tetraproth. I have tested most without success.
There may be larger private twin databases but the tetraproth chance seems too small. Most titanic twins have been found on forms that would give negative 2^n-k.

My sieve could sieve a titanic tetraproth to around 10^11.
The total expectation with PrimeForm/GW prp'ing for 1000 and 1100 digits looks a little below a GHz month. I don't have the cpu time.
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