Number 13
The number 13 is the 6th prime number, the 8th Fibonacci number. It has 2 divisors and a digital root of 4. Explore its full properties below, or find words and phrases with a gematria value of 13.
13
Divisors: 2
1, 13
Sum: 14
Prev Star: 1
2nd Star Number
Next Star: 37
Prev Fibonacci: 8
8th Fibonacci Number
Next Fibonacci: 21
Prev Prime: 11
6th Prime Number
Next Prime: 17
Mathematical Properties
Golden Number377
Reduced Digit Sum4
Magic Constant1,105
Digital Root4
Octal11(15)
Duodecimal15(11)
Hexadecimal19(d)
Binary1101
13th Values
Prime41
Triangular91
Square169
Star937
Pentagonal247
Cube2,197
Tetrahedral455
Square Pyramidal819
Fibonacci233
Harshad20
Happy Number91