Due to the large number of document samples, Mo Mei quickly found a clue, but this clue made Mo Mei send out "Ah! A scream.

"What's wrong?" Leng Yun asked, and when he looked at the big screen, he also showed a puzzled look.

It turns out that the whole screen is covered with numbers, and the numbers are constantly increasing, as if they are going to squeeze the whole screen.

Looking at the numbers on the screen, and they are still beating, it gives people the feeling that there are a lot of bugs crawling, which makes people get goosebumps.

Leng Yun asked, "What's wrong, is it a virus?" ”

Mo Mei shook her head and said, "This is not a virus, this is the clue I gave after computer analysis, that is, the clue is in this pile of numbers." ”

Leng Yun asked, "Is this another password?" What kind of 'dictionary' do you need this time? ”

Mo Mei also shook her head, and Hu Fei'er said at this time: "The numbers seem to have stopped. ”

After Mo Mei performed a few operations on the computer, several large screens in the room merged into one large screen, this screen was very huge, almost as big as the entire wall of the room, only to see that the screen was full of numbers, and at first glance, there was no pattern.

"46x30," Gaia said as she said with a keen sense of numbers, "1,860 numbers in total, but there really isn't any pattern to these numbers, they just seem to be random numbers!" ”

Everyone looked at the numbers dizzily, completely overwhelmed, but Leng Yun said: "I think, these numbers must be meaningful, otherwise they wouldn't appear like this." ”

Mo Mei used the computer to start analyzing the numbers, but still didn't find it.

Hu Fei'er said, could this number be a sequence?

Mo Mei immediately began to analyze, and then said, "I just analyzed various number series in the computer, and these 1,860 numbers are not equal difference series, nor equal proportion number series, nor equal sum number series. ”

Gaia said, "Shouldn't it be that simple, a special series of numbers? For example, the Fibonaccio sequence and the like. ”

Mo Meiyou made a ** work, and then said, "Fibonacci sequences, trigonometric functions, Cattelan numbers, and Yang Hui triangles are all not." ”

Leng Yun was stunned when he heard this, and said, what are you all talking about?

"Don't you know these sequences? ”

Leng Yun thought for a while and said, "I've heard of the Fibonache sequence, isn't it the one in the Da Vinci code?" ”

Mo Mei nodded and said, "The several sequences I mentioned just now are all relatively special sequences, and you don't need to know the exact meaning." ”

Gaia suddenly said, "What about the Great Derivation Sequence?" Have you tried it? ”

After Mo Mei operated the computer, she said, "Not really! ”

Gaia looked at the numbers so attentively that Leng Yun could even feel that her brain was doing faster calculations than the computer.

Suddenly, Gaia shouted, "Prime number! It could be prime! ”

Leng Yun was startled and asked, "What prime number?" ”

Gaia said, "Prime numbers are prime numbers, and they are not divisible by any other natural number except 1 and itself." ”

Leng Yun suddenly remembered that this was the mathematical knowledge he had learned before. He asked, "What does prime numbers have to do with these numbers now?" ”

Gaia said, "I found a number just now, this number divided by 2, it's 13099, and then I found another number, this number divided by 2 is 24121, do you know what these two numbers have in common?" ”

Leng Yun shook his head and asked, "What are the common characteristics?" ”

Hu Fei'er said: "Stupid you, of course they are all prime numbers, and you have forgotten all the foreshadowing before Gaia?" ”

Leng Yun nodded and asked, "What if it's all prime numbers?" ”

Gaia said to Mo Mei, "Sister Mei Mei, you divide all the numbers by 2 now and see the result." ”

Mo Mei operated the computer, and Leng Yun saw that Mo Mei opened a C language program, and then entered a command line, and then, I saw that the numbers on the big screen changed.

Originally, the numbers on the screen were whole numbers, but after dividing by 2, some of the numbers on the screen became numbers with decimal points.

Gaia looked at the screen for a moment and said, "Sister Meimei, remove all non-integers." ”

Mo Mei operated the computer a few times, only to see that all the non-integers on the screen were gone.

Now, the numbers on the screen are no longer 1860, but have become 1380, but Leng Yun feels that the change is not very big, and the numbers are still dense, which makes people feel very messy.

Gaia laughed and said, "I kind of know what's going on. Sister Meimei, please mark the prime number in the numbers on the screen. ”

"Prime numbers?" Mo Mei thought about it for a moment and began to program on the C language, she changed to programming and said, "Prime numbers?" It turns out that prime numbers are used for encryption! ”

Leng Yun asked strangely, "What's wrong with prime encryption?" ”

Mo Mei said, "When we hackers crack passwords or attack communications, the most feared thing is prime passwords. Because encryption is done by prime numbers, it is very difficult to crack unless you have a very advanced algorithm. ”

Leng Yun asked, "Why is it so difficult to encrypt with prime numbers?" ”

Gaia patiently said, "God, you know, no matter how big a number is, if you break it down, you will find that in the end, it will be broken down into prime numbers. ”

Mo Mei continued: "This is the fundamental theorem of arithmetic, any natural number can be decomposed into the product of prime numbers. However, there is no simple way to decompose a large integer, and you can only use smaller primes to try and divide them one by one, which is extremely time-consuming. ”

Leng Yun didn't have any idea and asked, "How big does it have to be?" ”

Mo Mei thought for a while and said, "If it weren't for the new computer I built myself, and I just used a traditional computer to calculate, it would take 10,000 years to decompose a 100-digit number. But if you think about it, if you multiply two 100-digit numbers, or even square them, the computer will do it very quickly. So, prime numbers are a high-level cryptographic procedure. ”

Leng Yun looked sad and said, "Then how long will it take us to figure it out?" ”

Mo Mei smiled and said, "We just need to find out the prime numbers now, and you see, these numbers only have 5 digits, and there are 4 digits, and it is very simple to calculate." ”

Soon, Mo Mei programmed the program and began to calculate, and soon, among the 1380 numbers, 13 prime numbers were found, but no matter how Leng Yun looked at it, he couldn't see any special meaning of these 13 five-digit prime numbers.

Gaia and Momei were once again in deep thought, but this time for a long time to no avail.

Lin Xiu suddenly smiled and said, "I know what's going on!" ”

This book was first published from 17k, the first time to see the genuine content!