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A088076 Smallest prime sandwiched between two numbers having exactly n prime divisors. 1
3, 11, 131, 1429, 77141, 3847271, 117048931, 22917541219, 1771365487891, 140734085123059, 14159733947566481 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Different from A088075 though initial three terms match. Sequence is infinite.

REFERENCES

J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 131, p. 45, Ellipses, Paris 2008.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

a(3) = 131, 130 = 2*5*13 and 132 = 2^2*3*11 both have three prime divisors. 131 is the smallest such prime.

CROSSREFS

Cf. A088075.

Sequence in context: A219620 A201611 A088075 * A276258 A284604 A072878

Adjacent sequences:  A088073 A088074 A088075 * A088077 A088078 A088079

KEYWORD

more,nonn

AUTHOR

Amarnath Murthy, Sep 22 2003

EXTENSIONS

More terms from Ray Chandler, Oct 08 2003

a(8) and a(9) from Donovan Johnson, Jun 19 2008

a(10)-a(11) from Donovan Johnson, Feb 18 2009

STATUS

approved

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Last modified June 17 05:55 EDT 2021. Contains 345080 sequences. (Running on oeis4.)