# BigInteger.EqualityBigInteger.EqualityBigInteger.EqualityBigInteger.Equality Operator

## Definition

 Equality(Int64, BigInteger) Equality(Int64, BigInteger) Equality(Int64, BigInteger) Equality(Int64, BigInteger) Returns a value that indicates whether a signed long integer value and a BigInteger value are equal. Equality(BigInteger, Int64) Equality(BigInteger, Int64) Equality(BigInteger, Int64) Equality(BigInteger, Int64) Returns a value that indicates whether a BigInteger value and a signed long integer value are equal. Equality(BigInteger, BigInteger) Equality(BigInteger, BigInteger) Equality(BigInteger, BigInteger) Equality(BigInteger, BigInteger) Returns a value that indicates whether the values of two BigInteger objects are equal. Equality(BigInteger, UInt64) Equality(BigInteger, UInt64) Equality(BigInteger, UInt64) Equality(BigInteger, UInt64) Returns a value that indicates whether a BigInteger value and an unsigned long integer value are equal. Equality(UInt64, BigInteger) Equality(UInt64, BigInteger) Equality(UInt64, BigInteger) Equality(UInt64, BigInteger) Returns a value that indicates whether an unsigned long integer value and a BigInteger value are equal.

## Equality(Int64, BigInteger)Equality(Int64, BigInteger)Equality(Int64, BigInteger)Equality(Int64, BigInteger)

Returns a value that indicates whether a signed long integer value and a BigInteger value are equal.

``````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 Int64 Int64 Int64

The first value to compare.

right
BigInteger BigInteger BigInteger BigInteger

The second value to compare.

#### Returns

`true` if the `left` and `right` parameters have the same value; otherwise, `false`.

### Remarks

The Equality(Int64, BigInteger) method defines the equality comparison operation for BigInteger values. It enables code such as the following:

``````BigInteger bigNumber = BigInteger.Pow(2, 63);
long number = Int64.MaxValue;
if (number == bigNumber)
{
// Do something...
}
``````
``````Dim bigNumber As BigInteger = BigInteger.Pow(2, 63)
Dim number As Long = Int64.MaxValue
If number = bigNumber Then
' Do something...
End If
``````

Languages that do not support custom operators can call the BigInteger.Equals(Int64) instance method instead.

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.Equals(Int64).

## Equality(BigInteger, Int64)Equality(BigInteger, Int64)Equality(BigInteger, Int64)Equality(BigInteger, Int64)

Returns a value that indicates whether a BigInteger value and a signed long integer value are equal.

``````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 BigInteger BigInteger BigInteger

The first value to compare.

right
Int64 Int64 Int64 Int64

The second value to compare.

#### Returns

`true` if the `left` and `right` parameters have the same value; otherwise, `false`.

### Remarks

The Equality(BigInteger, Int64) method defines the equality comparison operation for BigInteger values. It enables code such as the following:

``````BigInteger bigNumber = BigInteger.Pow(2, 63);
long number = Int64.MaxValue;
if (bigNumber == number)
{
// Do something...
}
``````
``````Dim bigNumber As BigInteger = BigInteger.Pow(2, 63)
Dim number As Long = Int64.MaxValue
If bigNumber = number Then
' Do something...
End If
``````

Languages that do not support custom operators can call the BigInteger.Equals(Int64) instance method instead.

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.Equals(Int64).

## Equality(BigInteger, BigInteger)Equality(BigInteger, BigInteger)Equality(BigInteger, BigInteger)Equality(BigInteger, BigInteger)

Returns a value that indicates whether the values of two BigInteger objects are equal.

``````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 BigInteger BigInteger BigInteger

The first value to compare.

right
BigInteger BigInteger BigInteger BigInteger

The second value to compare.

#### Returns

`true` if the `left` and `right` parameters have the same value; otherwise, `false`.

### Remarks

The Equality(BigInteger, BigInteger) method defines the operation of the equality operator for BigInteger values. It enables code such as the following:

``````BigInteger number1 = 945834723;
BigInteger number2 = 345145625;
BigInteger number3 = 945834723;
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 = 945834723
Console.WriteLine(number1 = number2)                  ' Displays False
Console.WriteLine(number1 = number3)                  ' Displays True
``````

Languages that do not support custom operators can call the BigInteger.Equals(BigInteger) instance method instead.

The equivalent method for this operator is BigInteger.Equals(BigInteger).

## Equality(BigInteger, UInt64)Equality(BigInteger, UInt64)Equality(BigInteger, UInt64)Equality(BigInteger, UInt64)

Important

This API is not CLS-compliant.

Returns a value that indicates whether a BigInteger value and an unsigned long integer value are equal.

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

#### Parameters

left
BigInteger BigInteger BigInteger BigInteger

The first value to compare.

right
UInt64 UInt64 UInt64 UInt64

The second value to compare.

#### Returns

`true` if the `left` and `right` parameters have the same value; otherwise, `false`.

### Remarks

The Equality(BigInteger, UInt64) method defines the equality comparison operation for BigInteger values. It enables code such as the following:

``````BigInteger bigNumber = BigInteger.Pow(2, 63) - BigInteger.One;
ulong uNumber = Int64.MaxValue & 0x7FFFFFFFFFFFFFFF;
if (bigNumber == uNumber)
{
// Do something...
}
``````
``````Dim bigNumber As BigInteger = BigInteger.Pow(2, 63) - BigInteger.One
Dim uNumber As ULong = CULng(Int64.MaxValue And CULng(&h7FFFFFFFFFFFFFFF))
If bigNumber = uNumber Then
' Do something...
End If
``````

Languages that do not support custom operators can call the BigInteger.Equals(UInt64) instance method instead.

## Equality(UInt64, BigInteger)Equality(UInt64, BigInteger)Equality(UInt64, BigInteger)Equality(UInt64, BigInteger)

Important

This API is not CLS-compliant.

Returns a value that indicates whether an unsigned long integer value and a BigInteger value are equal.

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

#### Parameters

left
UInt64 UInt64 UInt64 UInt64

The first value to compare.

right
BigInteger BigInteger BigInteger BigInteger

The second value to compare.

#### Returns

`true` if the `left` and `right` parameters have the same value; otherwise, `false`.

### Remarks

The Equality(UInt64, BigInteger) method defines the equality comparison operation for BigInteger values. It enables code such as the following:

``````BigInteger bigNumber = BigInteger.Pow(2, 63) - BigInteger.One;
ulong uNumber = Int64.MaxValue & 0x7FFFFFFFFFFFFFFF;
if (uNumber == bigNumber)
{
// Do something...
}
``````
``````Dim bigNumber As BigInteger = BigInteger.Pow(2, 63) - BigInteger.One
Dim uNumber As ULong = CULng(Int64.MaxValue And CULng(&h7FFFFFFFFFFFFFFF))
If uNumber = bigNumber Then
' Do something...
End If
``````

Languages that do not support custom operators can call the BigInteger.Equals(UInt64) instance method instead.