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A071373 Least number X such that the numbers from X to X+n-1 are, in some order, 1 * a prime, 2 * a prime, ..., n * a prime. 7
2, 3, 4, 7, 211, 18362, 2914913, 10780552, 1829413731, 1676641682, 21487725800101, 22755817971366481, 107271326364325201, 7272877497848202226 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

a(7)=2914913 because 2914913=1*2914913, 2914914=6*485819, 2914915=5*582983, 2914916=4*728729, 2914917=3*971639, 2914918=2*1457459 and 2914919=7*416417. The left factors are the integers 1 to 7; and the right factors are primes.

CROSSREFS

Cf. A071367-A071372.

Sequence in context: A127074 A109617 A181881 * A229597 A175060 A138773

Adjacent sequences:  A071370 A071371 A071372 * A071374 A071375 A071376

KEYWORD

nonn,more

AUTHOR

Don Reble, May 21 2002

EXTENSIONS

a(13)-a(14) from Don Reble, Sep 10 2012

STATUS

approved

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Last modified April 20 06:19 EDT 2019. Contains 322294 sequences. (Running on oeis4.)