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A124084 Least k such that k*p(n)!/p(n)# -1 is prime starting with n=3,(p(i)=i-th prime). 0
1, 1, 3, 5, 1, 7, 2, 4, 18, 12, 15, 5, 33, 16, 7, 46, 60, 35, 1, 87, 74, 5, 3, 19, 3, 23, 17, 55, 13, 105, 19, 48, 108, 50, 7, 37, 100, 111, 23, 50, 22, 80, 7, 73, 39, 24, 74, 51, 164, 21, 125, 62 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

LINKS

Table of n, a(n) for n=3..54.

EXAMPLE

3*2*3*4*5*6*7*8*9*10*11/(2*3*5*7*11) -1 = 51839 prime so k(5)=3 as p(5)=11

CROSSREFS

Sequence in context: A028510 A338721 A122053 * A133045 A320051 A341489

Adjacent sequences:  A124081 A124082 A124083 * A124085 A124086 A124087

KEYWORD

nonn

AUTHOR

Pierre CAMI, Nov 25 2006

STATUS

approved

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Last modified May 6 17:59 EDT 2021. Contains 343586 sequences. (Running on oeis4.)