This number is a prime.
Just showing those entries submitted by 'Rivera': (Click here to show all)
Each of the 22 primes between 27512549 and 27512879 have a Collatz sequence length of 224. Found by Abhiram R. Devesh. [Rivera]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell