|
Search: id:A051270
|
|
|
| A051270 |
|
Numbers that are divisible by exactly 5 different primes. |
|
+0
16
|
|
| 2310, 2730, 3570, 3990, 4290, 4620, 4830, 5460, 5610, 6006, 6090, 6270, 6510, 6630, 6930, 7140, 7410, 7590, 7770, 7854, 7980, 8190, 8580, 8610, 8778, 8970, 9030, 9240, 9282, 9570, 9660, 9690, 9870, 10010, 10230, 10374, 10626, 10710, 10920, 11130
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
T. D. Noe, Table of n, a(n) for n=1..1000
|
|
EXAMPLE
|
2730=2*3*5*7*13 is the first nontrivial 5-prime factor number following the 5th primorial, 2310=2*3*5*7*11
|
|
MATHEMATICA
|
lst={}; Do[If[Length[FactorInteger[n]]==5, (*Print[n]; *)AppendTo[lst, n]], {n, 3*10^4}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 21 2008]
|
|
CROSSREFS
|
A000961, A007774, A000977, A002110, A033992, A033993.
Sequence in context: A031636 A031546 A060231 this_sequence A046387 A136154 A076252
Adjacent sequences: A051267 A051268 A051269 this_sequence A051271 A051272 A051273
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu)
|
|
|
Search completed in 0.002 seconds
|
