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A070600
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Largest number with n prime factors where all factors are less than or equal to n.
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0
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0, 4, 27, 81, 3125, 15625, 823543, 5764801, 40353607, 282475249, 285311670611, 3138428376721, 302875106592253, 3937376385699289, 51185893014090757, 665416609183179841, 827240261886336764177, 14063084452067724991009
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| a(2) = 4 (4=2*2 has 2 factors and 2 is the largest prime number <= 2) a(3) = 27 (27=3*3*3 has 3 factors and 3 is the largest prime number <= 3) a(4) = 81 (81=3*3*3*3 has 4 factors and 3 is the largest prime number <= 4)
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CROSSREFS
| Sequence in context: A122406 A071837 A015238 * A100488 A071174 A092364
Adjacent sequences: A070597 A070598 A070599 * A070601 A070602 A070603
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KEYWORD
| easy,nonn
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AUTHOR
| Jostein Trondal (jallamekk(AT)hotmail.com), May 13 2002
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