Prime Number
Preserved but no longer current.
Meaning · English
The Golden Number; also called simply "the Prime.
Era: ca. 1898 (Victorian)
Examples
1 is not a prime number.1 không phải là số nguyên tố.
Is 1 a prime number?1 có phải là số nguyên tố không?
Tatoeba sentence #12709194 (CC BY 2.0 FR, tatoeba.org, retrieved 2026-07-31)
Sources & notes
Reproduced from Brewer’s Dictionary of Phrase and Fable (1898 edition, public domain; archive.org, retrieved 2026-07-31; OCR text, minor errors possible). Reflects the scholarship and attitudes of its era.
Common questions
What does “Prime Number” mean?
The Golden Number; also called simply "the Prime.
Is “Prime Number” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.