A096318 - OEIS

A096318

a(n) is the prime the precedes the first occurrence of a prime gap of 2n where the product of the smallest prime factor of each composite number in the gap is minimal.

3, 7, 23, 89, 409, 199, 113, 22621, 9109, 27827, 9439, 89867, 803867, 323509, 409187, 901367, 134293

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

EXAMPLE

a(3) = 23. This precedes the composite numbers 24,25,26,27,28 whose smallest prime factors are 2,5,2,3,2, respectively. Their product is 120, which is minimal.

CROSSREFS

Cf. A096317.

Sequence in context: A366694 A100964 A080077 * A373608 A299404 A268140

Adjacent sequences: A096315 A096316 A096317 * A096319 A096320 A096321

KEYWORD

nonn

AUTHOR

Ray G. Opao, Aug 02 2004

STATUS

approved