|
%I #6 Sep 14 2013 06:10:33
%S 97,91,902,910,9030,91770,903210,9699690,900029130,9146807670,
%T 902340208770,9426343036110,900781858106130,90004386781078770,
%U 914836017997511610,90100977291211496610,9000008798605567472730
%N Smallest number beginning with 9 that is the product of exactly n distinct primes.
%e a(2) = 91 = 7*13.
%o (PARI) a(n) = {i = prod(i=1, n, prime(i)); while ((digits(i)[1] != 9) || (omega(i) != n) || (bigomega(i) != n), i++); i;} \\ _Michel Marcus_, Sep 14 2013
%Y Cf. A077326-A077334, A106411-A106419, A106421-A106429.
%K base,nonn
%O 1,1
%A _Ray Chandler_, May 02 2005
|
