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A116692
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Primes with only one distinct decimal digit. Also called repunit primes or repdigit primes.
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6
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OFFSET
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1,1
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COMMENTS
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Primes in A010785 (repdigit numbers). Union of single-digit primes and A004022 (repunit primes). A004023 shows that the next term has 317 1's. The Mersenne primes (A000668) are the binary analog (i.e., bits are all 1's).
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REFERENCES
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Clifford A. Pickover, A Passion for Mathematics (2005) at 60, 297.
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LINKS
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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