century vs large integer

century and large integer both are nouns.

Word	Noun	Adjective	Verb	Adverb
century	Yes	No	No	No
large integer	Yes	No	No	No

As nouns, large integer is a hypernym of century; that is, large integer is a word with a broader meaning than century:

century (noun)	large integer (noun)
ten 10s	an integer equal to or greater than ten
a period of 100 years