411 REFERENCE · Wiktionary
Fermat pseudoprime
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
en mathematics With respect to an integer base b, with b > 1, a composite integer n such that bn-1 is congruent to one modulo n.
en 341 is a Fermat pseudoprime to the base two.
Usage notes
When no base is specified, base two (binary) is usually assumed; for example, "341 is a Fermat pseudoprime to the base two" can be simplified to "341 is a Fermat pseudoprime."