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A106421 Smallest number beginning with 1 and having exactly n prime divisors counted with multiplicity. 27
1, 11, 10, 12, 16, 108, 144, 128, 1296, 1152, 1024, 10368, 10240, 12288, 16384, 110592, 147456, 131072, 1327104, 1179648, 1048576, 10616832, 10485760, 12582912, 16777216, 113246208, 100663296, 134217728, 1006632960, 1207959552 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..29.

EXAMPLE

a(0) = 1, a(5) = 108 = 2^2*3^3.

CROSSREFS

Cf. A077326-A077334, A106411-A106419, A106421-A106429.

Sequence in context: A182782 A217789 A004283 * A019329 A086919 A060982

Adjacent sequences:  A106418 A106419 A106420 * A106422 A106423 A106424

KEYWORD

base,nonn

AUTHOR

Ray Chandler, May 02 2005

STATUS

approved

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Last modified October 18 04:46 EDT 2019. Contains 328145 sequences. (Running on oeis4.)