There are no odd weird numbers < 10^18

[Bob Hearn]

A quick followup - by using estimates for the number of primes in a  
given range for the 8th factor, I get an estimate of ~3.34*10^15 for  
the number of 8-factor primitive abundants. So, not as bad as I  
thought, but still probably too many to treat individually. (The  
exhaustive search to 10^18 searched ~10^11 primitive abundants in a  
week.)

Bob

On Jul 10, 2005, at 4:32 PM, Bob Hearn wrote:

> I'm pretty sure searching all 8-factor primitive abundants is not  
> feasible; the number of primitive abundants with n factors is  
> finite, but grows very fast ....

---------------------------------------------
Robert A. Hearn
rah at ai.mit.edu
http://www.swiss.ai.mit.edu/~bob/