At 03:43 PM 3/11/99 -0300, Nicolau C. Saldanha wrote:
>Some mathematician asked (conjectured?) whether M(M(M(M(...(2)...)))
>is always prime; the first unknown case is M(M127),
Another version of the conjecture is that M(M(p)) is prime where M(p) is a
Mersenne prime. I think that the first one that fails to be prime is
M(8191) = M(M(13)).
+--------------------------------------------------------+
| Jud McCranie [EMAIL PROTECTED] |
| |
| 127*2^96744+1 is prime! (29,125 digits, Oct 20, 1998) |
+--------------------------------------------------------+
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