Categories: java, declaration

How can I declare a number in java that is more than 64-bits? [duplicate]

1 answer

In a project that is related to security, it is required to deal with very huge prime numbers such as:


I am using java, and as it is know that maximum number that could be declared is 64-bits (type long) So is there any approach to deal with these numbers?

All answers to this question, which has the identifier 61239179

The best answer:

You can use BigDecimal from java.math package:

BigDecimal longerThanLong = new BigDecimal("9223372036854775808"); 

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