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2019-04-03, 07:40
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lukerichards
"Luke Richards"
Jan 2018
Birmingham, UK
2
^{5}
×3
^{2}
Posts
Only known instance where four consecutive primes, p, for which 2
^{p}
-1 is prime?
That is, where p
_{n}
is the nth prime and M(x) represents 2
^{x}
-1, then:
M(p
_{n}
)
M(p
_{n+1}
)
M(p
_{n+2}
)
M(p
_{n+3}
)
are all prime.
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