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.
n 8 = 2 ×2 × 2 = 23 )2
)2 .3 ( an
.na
an = a ×a ×…×a ×a
n
p1 p
.(Prime number)
.(Composite number)
2, 3, 5, 7 ,11,13,17,19,…
.( 1
[Some Divisibility Tests] a (.)
ab
(a b ) b .
2 ()
6=3 6 2 .
2 N
. 7 7
2 )
:
N2
.( 0
