10
This number is a composite.
Single Curio View: (Seek other curios for this number)
The 10 prime numbers 1103, 1109, 1117, 1667, 1877, 3001,
3389, 3559, 4001, and 4517 each has the same Collatz
trajectory length as its prime index. There are no more of
these in the first billion primes. Are there any more at
all? [Gaydos]
Submitted: 2019-08-03 05:38:32; Last Modified: 2019-08-03 12:37:14.
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