# How many digits is a long Java?

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## How many digits can a long hold Java?

A long can store a value from -9223372036854775808 to 9223372036854775807 . To be clear, at least 18 digits.

## How many digits can long have?

long: The long data type is a 64-bit two’s complement integer. The signed long has a minimum value of -263 and a maximum value of 263-1. In Java SE 8 and later, you can use the long data type to represent an unsigned 64-bit long, which has a minimum value of 0 and a maximum value of 264-1.

## What is a long in Java?

The long is a numeric data type in Java. This is also the primitive type. The long type takes 64 bits of memory. The maximum value that a long type variable can store is 9,223,372,036,854,775,807L. The minimum value is -9,223,372,036,854,775,808L.

## How do you write 10 to the power 9 in Java?

Since 109 fits into an int and is also exactly representable as a double , you can do this: int exp = (int) Math. pow(10, 9); BigInteger answer = BigInteger.

## What is the biggest data type in Java?

The largest integer number that a long type can represent is 9223372036854775807. If we deal with even larger numbers, we have to use the java.

Integers.

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Type Size Range
byte 8 bits -128 to 127
short 16 bits -32,768 to 32,767
char 16 bits 0 to 65,535
int 32 bits -2,147,483,648 to 2,147,483,647

## What is the maximum value for integer?

The number 2,147,483,647 (or hexadecimal 7FFFFFFF16) is the maximum positive value for a 32-bit signed binary integer in computing. It is therefore the maximum value for variables declared as integers (e.g., as int ) in many programming languages.

## How big of a number can an int store?

The INTEGER data type stores whole numbers that range from -2,147,483,647 to 2,147,483,647 for 9 or 10 digits of precision.

## What is type long?

Long is a data type used in programming languages, such as Java, C++, and C#. A constant or variable defined as long can store a single 64-bit signed integer. … Because the long data type is signed, the possible integers range from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807, including 0.

## Is Long bigger than double Java?

Furthermore, the data type long stores whole numbers from 9223372036854775808 to 9223372036854775807. On the other hand, double stores values from 1.7e-308 to 1.7e+038.

## What is difference between long and int in Java?

The basic difference between the type int and long is of their width where int is 32 bit, and long is 64 bits. … In Java, the range of type int is from –2,147,483,648 to 2,147,483,647 whereas, the range of type long is from –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 which is very much greater than type int.

## Why int is 2 or 4 bytes?

So the reason why you are seeing an int as 4 bytes (32 bits), is because the code is compiled to be executed efficiently by a 32-bit CPU. If the same code were compiled for a 16-bit CPU the int may be 16 bits, and on a 64-bit CPU it may be 64 bits.

## HOW MUCH CAN 4 bytes hold?

Integers are commonly stored using a word of memory, which is 4 bytes or 32 bits, so integers from 0 up to 4,294,967,295 (232 – 1) can be stored.

## Is int always 4 bytes?

Nowadays in most of compilers int is of 4 bytes. If you want to check what your compiler is using you can use sizeof(int) .

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