9241
This number is a prime.
The smallest prime which remains prime when its representation in bases 2-5 are read in decimal: {10010000011001}, {110200021}, {2100121}, {243431}. [Bajpai]
9241 and the 9241th semiprime (37685) together contains all
digits from 1 to 9 exactly once. This is the largest number
with that property. [Gupta]
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