# 777777722155555333

This number is a prime.

77777772 2155555333

Just showing those entries submitted by 'Beedassy': (Click here to show all)

The largest prime with each noncomposite digit *d*
repeated *d* times. Note that replacing digit 1 by 5
forms the largest prime (777777722555555333) with each
prime digit *d'* repeated a number of times closest to
and at least equal to *d'*. [Beedassy]

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