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A069681
Primes with either no internal digits or all internal digits are 6.
8
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 163, 167, 263, 269, 367, 461, 463, 467, 563, 569, 661, 761, 769, 863, 967, 1663, 1667, 1669, 2663, 4663, 5669, 6661, 7669, 8663, 8669, 9661, 16661, 26669, 46663, 56663
OFFSET
1,1
KEYWORD
nonn,base
AUTHOR
Amarnath Murthy, Apr 06 2002
EXTENSIONS
Corrected by Ray Chandler, Nov 24 2003
Offset corrected and name changed by Arkadiusz Wesolowski, Sep 07 2011
STATUS
approved