3511
This number is a prime.
Just showing those entries submitted by 'Galliani': (Click here to show all)
The number 92020! starts with digits 3511. [Galliani]
sqrt(3511-15*7#) and sqrt(3511+7#) produce a pair of
invertible primes, 19 and 61. [Galliani]
(There are 2 curios for this number that have not yet been approved by an editor.)
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