10391

10391 is a natural number that comes after 10390 and before 10392. It is a five-digit, odd integer. The sum of its digits is 14, which implies it is not divisible by 3 or 9, and its last digit shows it is not divisible by 2 or 5. Its value modulo 9 is 5.

In mathematics, 10391 serves as an example in discussions of divisibility and prime testing. As with any integer, determining whether 10391 is prime requires a full factorization, but basic tests confirm it is not divisible by the primes 2, 3, or 5. The number can appear in modular arithmetic exercises and as a data point in sequences or algorithms.

In science and information technology, 10391 is commonly used as a numeric identifier within cataloging and indexing systems. In astronomy, minor planets are assigned sequential numbers, so 10391 could correspond to a specific object once publicly designated. In libraries, databases, and manufacturing, such numbers frequently serve as stable identifiers for entries, models, or parts. Related numeric identifiers include 10390 and 10392.