A070842 Smallest n-digit number with exactly n prime divisors. There are no further terms.

2, 10, 102, 1020, 10010, 101010, 1009470, 11741730, 223092870, 6469693230

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Example

a(4) = 1020 with the prime divisors 2, 3, 5, 17.

Crossrefs

Cf. A001221 (omega), A002110 (primorials), A070843.

Sequence in context: A074109 A291101 A036336 * A086927 A342108 A135058

Adjacent sequences: A070839 A070840 A070841 * A070843 A070844 A070845

Keyword

base,nonn,fini,full

Author

Amarnath Murthy, May 12 2002

Extensions

More terms from Robert G. Wilson v and Rick L. Shepherd, May 14 2002

Corrected and edited by Ray Chandler, Feb 15 2009

Status

approved