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  • PreviousPrime Method
IntegerMathPreviousPrime Method Extreme Optimization Numerical Libraries for .NET Professional
Returns the first prime number preceding the given number.

Namespace: Extreme.Mathematics
Assembly: Extreme.Numerics.Net40 (in Extreme.Numerics.Net40.dll) Version: 6.0.16073.0 (6.0.17114.0)
Syntax
C#
VB
C++
F#
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public static int PreviousPrime(
	int n
)
Public Shared Function PreviousPrime ( 
	n As Integer
) As Integer
public:
static int PreviousPrime(
	int n
)
static member PreviousPrime : 
        n : int -> int

Parameters

n
Type: SystemInt32
A 32-bit integer.

Return Value

Type: Int32
The next prime number, if there is one, or -1 if not.
Version Information

Numerical Libraries

Supported in: 6.0, 5.x, 4.x
See Also

Reference

IntegerMath Class
Extreme.Mathematics Namespace

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