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A057628 Primes such that replacing each digit d with d copies of the digit d produces a prime. Zeros are not allowed. +0
4
11, 31, 53, 131, 149, 223, 283, 311, 313, 331, 397, 463, 641, 691, 937, 941, 1439, 1511, 1741, 1871, 1949, 1993, 1999, 2111, 2447, 2939, 3163, 3391, 3433, 3499, 3559, 3593, 3659, 3911, 3931, 5227, 5399, 5923, 6163, 6269, 6653, 6719, 7177, 7741, 8389 (list; graph; listen)
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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