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Number 13

Prime factorization

Factorization 13
Divisors 1, 13
Count of divisors 2
Sum of divisors 14

Basic properties

Is prime? ◎ YES
It's 6th prime number.
Previous integer 12
Next integer 14
Previous prime number 11
Next prime number 17
Reciprocal 0.076923076923076
Square 169
Square root 3.605551275463989
Natural logarithm 2.5649493574615367
Decimal logarithm 1.1139433523068367
Sine 0.4201670368266409
Cosine 0.9074467814501962
Tangent 0.4630211329364896

Expressions

Binary 1101
Octal 15
Hexadecimal d