739

739 is a prime number.

739 is the smallest prime number that is the sum of distinct primes beginning and ending with the digit 3: 739 = 3 + 353 + 383.

739 is the smallest prime that can be expressed as a sum of powers with the four prime digits as bases and exponents: 739 = 2⁷ + 3⁵ + 5² + 7³.

739 has a base 2 representation (1011100011) that begins with its base 9 representation (1011).

739 is a right-truncatable prime because itself, 73, and 7 are prime numbers.

Source: Prime Curios!