A113159 Smallest n-semiprime equal to the product of increasing distinct primes.

6, 1155, 86822723, 39181802686993, 35597295809230452047, 106599435598498872379635683

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

a(1) = 6 is 1-semiprime equal 2*3;
a(2) = 1155 is 2-semiprime equal (3*5)*(7*11);
a(3) = 86822723 is 3-semiprime equal (11*13)*(17*19)*(23*29).

Crossrefs

Sequence in context: A267071 A219165 A185537 * A159717 A160857 A160005

Adjacent sequences: A113156 A113157 A113158 * A113160 A113161 A113162

Keyword

nonn

Author

Giovanni Teofilatto, Jan 05 2006

Status

approved