77777...22223 (29-digits)
(another
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' Curiosity)
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Prime Puzzio
Test Number
GIMPS
has discovered a new
largest known prime number
: 2
82589933
-1 (24,862,048 digits)
777777322 2232222223 2222222223
Conjecturally, the largest
emirp
with only
prime
digits that has a
multiplicative persistence
of 11. Note the
prime number
of digits. [
Beedassy
]
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