138959
This number is a prime.
Single Curio View: (Seek other curios for this number)
Largest number n (coincidentally prime) such that the nth
triangular number contains each of the 10 decimal digits
exactly once i.e. T(138959) = 9654871320. [Gupta]
Submitted: 2013-09-14 18:06:56; Last Modified: 2019-01-30 13:28:31.
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