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A054681
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Start of a run of consecutive primes of length n each ending with the same digit.
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8
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2, 139, 1627, 18839, 123229, 776257, 3873011, 23884639, 36539311, 196943081, 452942827, 73712513057, 154351758091, 154351758091, 4010803176619, 6987191424553, 71894236537009, 196948379177587, 253931039382791
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OFFSET
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1,1
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COMMENTS
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n consecutive primes differ by a multiple of 10 starting at a(n).
n consecutive primes that are congruent mod 10, i.e., they are not necessarily in arithmetic progression.
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LINKS
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EXAMPLE
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a(2)=139 because 139 and 149 are the first consecutive primes to share a terminal digit.
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PROG
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(PARI) i=1; s=0; d=0; l=0; forprime(p=1, 500000, if(p%10==d, l++, if(l>=i, print(s); i++); s=p; d=p%10; l=1)) \\ (Carmody)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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