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A324206 Numbers with exactly six distinct exponents in their prime factorization, or six distinct parts in their prime signature. 1
5244319080000, 6197831640000, 6857955720000, 7342046712000, 7664774040000, 7866478620000, 8241072840000, 8676964296000, 8740531800000, 9278410680000, 9296747460000, 9578467080000, 9601138008000, 10286933580000, 10329719400000, 10488638160000, 10598658840000, 10705345560000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

David A. Corneth, Table of n, a(n) for n = 1..10000

EXAMPLE

6197831640000 = 2^6 * 3^5 * 5^4 * 7^3 * 11 * 13^2 is in the sequence as there are 6 distinct exponents; 1 through 6.

PROG

(PARI) is(n) = #Set(factor(n)[, 2]) == 6

CROSSREFS

Cf. A001221, A001222, A006939, A051270, A059404, A071625, A118914, A181819, A182855, A323014, A323022, A323024, A323025, A323056.

Sequence in context: A216909 A173710 A258275 * A204349 A094910 A295353

Adjacent sequences:  A324203 A324204 A324205 * A324207 A324208 A324209

KEYWORD

nonn,easy

AUTHOR

David A. Corneth, Feb 17 2019

STATUS

approved

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Last modified September 27 19:34 EDT 2021. Contains 347694 sequences. (Running on oeis4.)