239
This number is a prime.
Just showing those entries submitted by 'Gaydos': (Click here to show all)
The reversal of the 239th prime number (1499) is the 239th
emirp (9941). [Gaydos]
The 52nd prime number (239) has a Collatz trajectory length
of 52. [Gaydos]
The smallest integer greater than 1 that has the same
Collatz trajectory length (52) as its square (57121). [Gaydos]
None of the 239 consecutive primes from 77132821 to
77137121 has the same sum of digits as the prime before it
or the prime after it. [Gaydos]
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