10 Mar
2008
10 Mar
'08
2:23 p.m.
[Dave]:
Suppose a and b are digits such that a+b<10. Then the two pairs
A = a.....a (n a's), B=b and A = a B = a.....ab (n-1 a's) generate the same C and are the same when concatenated together. This leads to an infinite family of D-primes. ----- ... Indeed, thanks Dave, well done! Best, E.