extravagant number
(another Prime Pages' Glossary entries)
The Prime Glossary
Glossary: Prime Pages: Top 5000:
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An extravagant number is one for which the prime factorization (including powers) requires more digits that the original number such as 30 = 2*3*5 (compare to economical number).

See Also: EconomicalNumber, EquidigitalNumber

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