Regular Prime - Kummer's Criterion

Kummer's Criterion

Ernst Kummer (Kummer 1850) showed that an equivalent criterion for regularity is that p does not divide the numerator of any of the Bernoulli numbers Bk for {{{1}}}.

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Famous quotes containing the word criterion:

    “Faith in reason as a prime motor is no longer the criterion of the sound mind, any more than faith in the Bible is the criterion of righteous intention.”
    —George Bernard Shaw (1856–1950)