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A114370 Sum of numbers from prime p to nextprime(p)-1 is a repdigit. 0
2, 3, 5, 53, 55555553, 55555555555555555555555553, 2777777777777777777777777777777777777 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The sequence is built under the (reasonable) assumption that 100+2*Log(p)^2 is an upper bound to the largest gap between a prime p and nextprime(p). Under this assumption there are no other terms with less than 100 digits.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

nextprime(55555555555555555555555553) is 55555555555555555555555559 and the sum

from 55555555555555555555555553 to 55555555555555555555555558 gives the repdigit 333333333333333333333333333.

CROSSREFS

Cf. A010785, A054268.

Sequence in context: A056720 A100850 A060085 * A114725 A136340 A029961

Adjacent sequences:  A114367 A114368 A114369 * A114371 A114372 A114373

KEYWORD

base,nonn

AUTHOR

Giovanni Resta, Feb 09 2006

STATUS

approved

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Last modified May 27 04:12 EDT 2019. Contains 323597 sequences. (Running on oeis4.)