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A104486
Smallest semiprime containing exactly n 0's.
0
10, 1003, 10001, 100001, 1000001, 10000001, 100000001, 1000000006, 10000000003, 100000000007, 1000000000007, 40000000000003, 200000000000005, 1000000000000003, 10000000000000003, 200000000000000006, 1000000000000000007, 10000000000000000001, 200000000000000000001
OFFSET
1,1
EXAMPLE
a(2) = 1003 because 1003 = 17 * 59 is the smallest semiprime containing exactly two 0's.
CROSSREFS
Cf. A001358.
Sequence in context: A139101 A015482 A288582 * A098753 A276758 A066489
KEYWORD
base,nonn
AUTHOR
Shyam Sunder Gupta, Apr 24 2005
EXTENSIONS
More terms from Amiram Eldar, Aug 24 2020
STATUS
approved