Usually, this happens through RSA encryption, which encrypts data using the number you get from multiplying two really big prime numbers.

通常， 这是通过 RSA 加密实现的，RSA 加密使用两个非常大的质数相乘得到的数来加密数据。

The prime numbers that protect your credit card are typically around 300 digits, so the GIMPS number is actually way too big to be useful for RSA encryption.

保护信用卡的质数通常约为 300 位，因此 GIMPS 数实际上太大而无法用于 RSA 加密。