# BigInteger.LessThan Operator

## Definition

Returns a value that indicates whether a specified value is less than a second specified value.

## Overloads

 LessThan(UInt64, BigInteger) Returns a value that indicates whether a 64-bit unsigned integer is less than a BigInteger value. LessThan(BigInteger, BigInteger) Returns a value that indicates whether a BigInteger value is less than another BigInteger value. LessThan(BigInteger, UInt64) Returns a value that indicates whether a BigInteger value is less than a 64-bit unsigned integer. LessThan(Int64, BigInteger) Returns a value that indicates whether a 64-bit signed integer is less than a BigInteger value. LessThan(BigInteger, Int64) Returns a value that indicates whether a BigInteger value is less than a 64-bit signed integer.

## LessThan(UInt64, BigInteger)

Important

This API is not CLS-compliant.

Returns a value that indicates whether a 64-bit unsigned integer is less than a BigInteger value.

``````public:
static bool operator <(System::UInt64 left, System::Numerics::BigInteger right);``````
``````[System.CLSCompliant(false)]
public static bool operator < (ulong left, System.Numerics.BigInteger right);``````
``````[<System.CLSCompliant(false)>]
static member ( < ) : uint64 * System.Numerics.BigInteger -> bool``````
``Public Shared Operator < (left As ULong, right As BigInteger) As Boolean``

#### Parameters

left
UInt64

The first value to compare.

right
BigInteger

The second value to compare.

#### Returns

Boolean

`true` if `left` is less than `right`; otherwise, `false`.

Attributes

### Remarks

The LessThan method defines the operation of the less than operator for BigInteger values. It enables code such as the following:

``````BigInteger number = BigInteger.Parse("9801324316220166912");
if (UInt64.MaxValue < number)
{
// Do something.
}
else
{
// Do something else.
}
``````
``````Dim number As BigInteger = BigInteger.Parse("9801324316220166912")
If UInt64.MaxValue < number Then
' Do something.
Else
' Do something else.
End If
``````

Languages that do not support custom operators can call the BigInteger.CompareTo(UInt64) method instead. They can also call the LessThan(UInt64, BigInteger) method directly, as the following example shows.

``````Dim number As BigInteger = BigInteger.Parse("9801324316220166912")
If BigInteger.op_LessThan(UInt64.MaxValue, number) Then
' Do something.
Else
' Do something else.
End If
``````

The equivalent method for this operator is BigInteger.CompareTo(UInt64).

## LessThan(BigInteger, BigInteger)

Returns a value that indicates whether a BigInteger value is less than another BigInteger value.

``````public:
static bool operator <(System::Numerics::BigInteger left, System::Numerics::BigInteger right);``````
``public static bool operator < (System.Numerics.BigInteger left, System.Numerics.BigInteger right);``
``static member ( < ) : System.Numerics.BigInteger * System.Numerics.BigInteger -> bool``
``Public Shared Operator < (left As BigInteger, right As BigInteger) As Boolean``

#### Parameters

left
BigInteger

The first value to compare.

right
BigInteger

The second value to compare.

#### Returns

Boolean

`true` if `left` is less than `right`; otherwise, `false`.

### Remarks

The LessThan method defines the operation of the less than operator for BigInteger values. It enables code such as the following:

``````BigInteger number1 = 945834723;
BigInteger number2 = 345145625;
BigInteger number3 = 945834724;
Console.WriteLine(number1 < number2);              // Displays False
Console.WriteLine(number1 < number3);              // Displays True
``````
``````Dim number1 As BigInteger = 945834723
Dim number2 As BigInteger = 345145625
Dim number3 As BigInteger = 945834724
Console.WriteLine(number1 < number2)                  ' Displays False
Console.WriteLine(number1 < number3)                  ' Displays True
``````

Languages that do not support custom operators can call the BigInteger.Compare method instead. Some languages can also call the LessThan(BigInteger, BigInteger) method directly, as the following example shows.

``````Dim numberA As BigInteger = 945834723
Dim numberB As BigInteger = 345145625
Dim numberC As BigInteger = 945834724
Console.WriteLine(BigInteger.op_LessThan(numberA, numberB))    ' Displays False
Console.WriteLine(BigInteger.op_LessThan(numberA, numberC))    ' Displays True
``````

The equivalent method for this operator is BigInteger.Compare(BigInteger, BigInteger).

## LessThan(BigInteger, UInt64)

Important

This API is not CLS-compliant.

Returns a value that indicates whether a BigInteger value is less than a 64-bit unsigned integer.

``````public:
static bool operator <(System::Numerics::BigInteger left, System::UInt64 right);``````
``````[System.CLSCompliant(false)]
public static bool operator < (System.Numerics.BigInteger left, ulong right);``````
``````[<System.CLSCompliant(false)>]
static member ( < ) : System.Numerics.BigInteger * uint64 -> bool``````
``Public Shared Operator < (left As BigInteger, right As ULong) As Boolean``

#### Parameters

left
BigInteger

The first value to compare.

right
UInt64

The second value to compare.

#### Returns

Boolean

`true` if `left` is less than `right`; otherwise, `false`.

Attributes

### Remarks

The LessThan method defines the operation of the less than operator for BigInteger values. It enables code such as the following:

``````BigInteger number = BigInteger.Parse("19801324316220166912");
if (number < UInt64.MaxValue)
{
// Do something.
}
else
{
// Do something else.
}
``````
``````Dim number As BigInteger = BigInteger.Parse("19801324316220166912")
If number < UInt64.MaxValue Then
' Do something.
Else
' Do something else.
End If
``````

Languages that do not support custom operators can call the BigInteger.CompareTo(UInt64) method instead. They can also call the LessThan(BigInteger, UInt64) method directly, as the following example shows.

``````Dim number As BigInteger = BigInteger.Parse("19801324316220166912")
If BigInteger.op_LessThan(number, UInt64.MaxValue) Then
' Do something.
Else
' Do something else.
End If
``````

The equivalent method for this operator is BigInteger.CompareTo(UInt64).

## LessThan(Int64, BigInteger)

Returns a value that indicates whether a 64-bit signed integer is less than a BigInteger value.

``````public:
static bool operator <(long left, System::Numerics::BigInteger right);``````
``public static bool operator < (long left, System.Numerics.BigInteger right);``
``static member ( < ) : int64 * System.Numerics.BigInteger -> bool``
``Public Shared Operator < (left As Long, right As BigInteger) As Boolean``

#### Parameters

left
Int64

The first value to compare.

right
BigInteger

The second value to compare.

#### Returns

Boolean

`true` if `left` is less than `right`; otherwise, `false`.

### Remarks

The LessThan method defines the operation of the less than operator for BigInteger values. It enables code such as the following:

``````BigInteger number = BigInteger.Parse("9801324316220166912");
if (Int64.MaxValue < number)
{
// Do something.
}
else
{
// Do something else.
}
``````
``````Dim number As BigInteger = BigInteger.Parse("9801324316220166912")
If Int64.MaxValue < number Then
' Do something.
Else
' Do something else.
End If
``````

Languages that do not support custom operators can call the BigInteger.CompareTo(Int64) method instead. Some languages can also call the LessThan(Int64, BigInteger) method directly, as the following example shows.

``````Dim number As BigInteger = BigInteger.Parse("9801324316220166912")
If BigInteger.op_LessThan(Int64.MaxValue, number) Then
' Do something.
Else
' Do something else.
End If
``````

If `left` is a Byte, Int16, Int32, SByte, UInt16, or UInt32 value, it is implicitly converted to an Int64 value when the operation is performed.

The equivalent method for this operator is BigInteger.CompareTo(Int64).

## LessThan(BigInteger, Int64)

Returns a value that indicates whether a BigInteger value is less than a 64-bit signed integer.

``````public:
static bool operator <(System::Numerics::BigInteger left, long right);``````
``public static bool operator < (System.Numerics.BigInteger left, long right);``
``static member ( < ) : System.Numerics.BigInteger * int64 -> bool``
``Public Shared Operator < (left As BigInteger, right As Long) As Boolean``

#### Parameters

left
BigInteger

The first value to compare.

right
Int64

The second value to compare.

#### Returns

Boolean

`true` if `left` is less than `right`; otherwise, `false`.

### Remarks

The LessThan method defines the operation of the less than operator for BigInteger values. It enables code such as the following:

``````BigInteger number = BigInteger.Parse("9801324316220166912");
if (number < Int64.MaxValue)
{
// Do something.
}
else
{
// Do something else.
}
``````
``````Dim number As BigInteger = BigInteger.Parse("9801324316220166912")
If number < Int64.MaxValue Then
' Do something.
Else
' Do something else.
End If
``````

Languages that do not support custom operators can call the BigInteger.CompareTo(Int64) method instead. Some languages can also call the LessThan(BigInteger, Int64) method directly, as the following example shows.

``````Dim number As BigInteger = BigInteger.Parse("9801324316220166912")
If BigInteger.op_LessThan(number, Int64.MaxValue) Then
' Do something.
Else
' Do something else.
End If
``````

If `right` is a Byte, Int16, Int32, SByte, UInt16, or UInt32 value, it is implicitly converted to an Int64 value when the operation is performed.

The equivalent method for this operator is BigInteger.CompareTo(Int64).