The largest known primorial prime of the form n# - 1 is equal to 1,098,133# - 1, which is 476,311 digits long; it has been discovered on March 1, 2012.[1]

The largest known primorial prime of the form n# + 1 is equal to 392,113# + 1, which is 169,966 digits long; it has been discovered on September 20, 2001.[1]

Sources

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