plural of wrong number

(mathematics) A non-negative integer, the representation of whose square in its base can be split into two parts that add up to itself (such as 297, whose square, 88209, can be split into 88 and 209, totalling 297).

plural of 0800 number

(UK, New Zealand) A telephone number beginning with 0800; these numbers are free for the caller because the call is paid for by the company or organisation being called.

plural of phone number

plural of algebraic number

plural of hypercomplex number

plural of house number

plural of irrational number

plural of number field