397 (the 78th prime)
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389
Octal
(615)
8
Hexadecimal
(18D)
16
Prime gap
4
22nd
Cousin prime
(the small number)
The big number is
401
.
37th
Prime of the Form 3n+1
17
2
+ 3 * 6
2
37th
Prime of the Form 4n+1
6
2
+ 19
2
31st
Left-truncatable prime
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