72271
This number is a prime.
Add all three consecutive triangular numbers together where
the first is odd and the next two are even. In a list of
results the 3rd, 5th, 8th, 21st, 34th and 55th are all the
largest of a twin prime pair, this one being the largest of
the six. Note that 3, 5, 8, 21, 34, and 55 are Fibonacci
numbers that are more abundant than any smaller Fibonacci
number. [Homewood]
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