with . The first few values for , 1, 2, ... are 1, 3, 3, 4, 7, 7, 7, 9, 9, 10, 13, ... (OEIS
A007448).
Conway and Guy (1996, p. 15) note that is the alphabetically first prime number in the American
system of large number terminology, and term this "Knuth's number."
. The first few values for 
, 1, 2, ... are 1, 3, 3, 4, 7, 7, 7, 9, 9, 10, 13, ... (OEIS
A007448).
is the alphabetically first prime number in the American
system of large number terminology, and term this "Knuth's number."
