OFFSET
1,2
EXAMPLE
The first 3 senary digits of Pi (A004605) are 305 = 113 in decimal, which is a prime.
MATHEMATICA
Do[ If[ PrimeQ[ FromDigits[ First[ RealDigits[Pi, 6, n]], 6]], Print[n]], {n, 1, 2585} ]
CROSSREFS
KEYWORD
base,bref,nonn
AUTHOR
Robert G. Wilson v, Dec 10 2001
STATUS
approved