OFFSET
1,1
COMMENTS
An Ormiston n-tuple is n consecutive primes containing the same decimal digits in different order. a(5) found by Giovanni Resta. a(6) may be 166389896360719.
LINKS
Jens Kruse Andersen, Ormiston Tuples
A. Edwards, Ormiston Pairs, Australian Mathematics Teacher, Vol. 58, No. 2 (2002), pp 12-13.
E. W. Weisstein, Rearrangement Prime Pair at MathWorld.Wolfram.com.
EXAMPLE
(1913, 1931) is the first case of two consecutive primes with the same digits. The first 3-, 4- and 5-tuples are: (11117123, 11117213, 11117321), (6607882123, 6607882213, 6607882231, 6607882321), (20847942560791, 20847942560917, 20847942560971, 20847942561079, 20847942561097).
CROSSREFS
KEYWORD
nonn,base,hard
AUTHOR
Jens Kruse Andersen, Oct 20 2012
STATUS
approved