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A007702 a(n) = prime(n)*...*prime(m), the least product of consecutive primes which is non-deficient. 5
6, 15015, 33426748355, 1357656019974967471687377449, 7105630242567996762185122555313528897845637444413640621 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

FORMULA

a(n) = Product_{k = n..A007684(n)} prime(k) = Product_{0 <= i < A107705(n)} prime(n+i). - M. F. Hasler, Jun 15 2017

PROG

(PARI) A007702(n, p=prime(n), s=1+1/p, P=p)={until(2<=s*=1+1/p, P*=p=nextprime(p+1)); P} \\ M. F. Hasler, Jun 15 2017

CROSSREFS

Cf. A005100, A007741, A007684, A007686.

Cf. A107705, A108227, A285993.

Sequence in context: A093897 A062782 A036773 * A130434 A121571 A123659

Adjacent sequences:  A007699 A007700 A007701 * A007703 A007704 A007705

KEYWORD

nonn

AUTHOR

Walter Nissen

EXTENSIONS

More terms from Don Reble, Nov 10 2005

STATUS

approved

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Last modified January 22 23:00 EST 2019. Contains 319365 sequences. (Running on oeis4.)