The engineer compared the octane numbers of several fuels before recommending the best option.

Many small businesses choose vanity numbers to make their contact information easier for customers to remember.

In the number theory seminar, we studied several sphenic numbers and analyzed how each one factors into three distinct prime numbers.

Practical numbers often appear in problems about divisors and factorization.

Linguists debate whether collective numbers should be treated as plural or singular in certain languages.

Greek numbers are essential when studying ancient inscriptions and manuscripts.

Many mathematicians study how pyramidal numbers relate to figurate numbers and three-dimensional packing problems.

In the combinatorics seminar, she demonstrated how triangular numbers appear in handshake problems.

To estimate the growth of the series, she compared the partial sums of harmonic numbers to the natural logarithm.

Neutron numbers vary significantly across isotopes, affecting their stability and decay modes.