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A077334
Smallest number beginning with 9 and having exactly n distinct prime divisors.
27
9, 91, 90, 910, 9030, 90090, 903210, 9699690, 900029130, 9146807670, 901741380540, 9426343036110, 900781858106130, 90004386781078770, 914836017997511610, 90100977291211496610, 9000008798605567472730, 900002983747159323401370
OFFSET
1,1
EXAMPLE
a(2) = 91 = 13*7.
PROG
(PARI) a(n) = {i = prod(i=1, n, prime(i)); while ((digits(i)[1] != 9) || (omega(i)!= n), i++); i; } \\ Michel Marcus, Sep 14 2013
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Nov 04 2002
EXTENSIONS
a(5)-a(10) from Ray Chandler, Apr 17 2005
More terms from Ray Chandler, May 02 2005
STATUS
approved