853
147ΤΪΜ
f
tΜzΒί
: 213
29ΤΪΜ
Eulerf(n = 28)
71ΤΪΜ
4n+1^Μf
( 853 = 23
2
+ 18
2
)
ΜfάΕΜ·
Ν4
8i\L(1525)
8
16i\L(355)
16
71ΤΪΜ
3n+1^Μf
( 853 = 29
2
+ 3~2
2
)