The largest known Pierpont prime is equal to 3 × 216,408,818 + 1, which is 4,939,547 digits long; it has been discovered on October 28, 2020.[1]

The largest known Pierpont prime of the second kind (except Mersenne and Thabit primes) is equal to 4 × 721,119,849 − 1, which is 2,079,933 digits long; it has been discovered on September 7, 2016.[2]

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