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2 results for “fermat”
Formulae (2)
Number Theory
Advanced
Fermat's Little Theorem
a
p
−
1
≡
1
(
m
o
d
p
)
a^{p-1} \equiv 1 \pmod{p}
a
p
−
1
≡
1
(
mod
p
)
Holds when p is prime and gcd(a,p)=1.
Number Theory
Advanced
Fermat Number
F
n
=
2
2
n
+
1
F_n = 2^{2^n} + 1
F
n
=
2
2
n
+
1
Numbers of a special exponential form.