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A106417 Smallest number beginning with 7 that is the product of exactly n distinct primes. 1
7, 74, 70, 714, 7410, 71610, 746130, 70387590, 703600590, 70015935990, 700288518930, 7420738134810, 701098433345310, 70016268785853390, 757887406446280110, 70025936403159126390, 7001749954335151685670 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

EXAMPLE

a(3) = 70 = 2*5*7.

CROSSREFS

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

Sequence in context: A051154 A172257 A106427 * A137141 A275618 A114472

Adjacent sequences:  A106414 A106415 A106416 * A106418 A106419 A106420

KEYWORD

base,nonn

AUTHOR

Ray Chandler, May 02 2005

STATUS

approved

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Last modified February 18 10:13 EST 2019. Contains 320250 sequences. (Running on oeis4.)