This number is a prime.
Just showing those entries submitted by 'Silva': (Click here to show all)
The product of the nonzero even digits minus 1. [Silva]
383 = 3^5 + 1^4 + 4^1 + 1^9 + 5^3 + 9^1. Note the first six digits of the decimal expansion of π as bases and exponents. [Silva]