The coordination numbers of the atoms in the crystal lattice are determined by the arrangement of the surrounding atoms.

Fibonacci numbers are a sequence of numbers in which each number is the sum of the two preceding ones.

Figurate numbers are a sequence of numbers that can be represented in the form of geometric shapes.

There are many RSA numbers in cryptography.

Composite numbers are integers that have more than two factors.

There are many Greek numbers in this book.

I always forget the magic numbers for my favorite spells.

The proton numbers of the elements in the periodic table vary.

The regnal numbers of the kings were engraved on the monument.

Complex numbers are used in various fields of mathematics.