Who knows what 169 means in a domain name

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The 169 "special service number is a special code for access that is uniformly used between the national ** network and the public information network.

The meaning of 169 in domain names is inherited from the nature of the above numbers. It can reflect the official meaning of the operator and make users have false trust.

This is a relatively easy number to remember, and the meaning is also better.

Meaning: 169 (one hundred and sixty-nine) is a natural number between 168 and 170. is an odd, composite, and squared number.

The 56th semi-prime number. The former is 166 and the next is 177. The 13th square number is 13 square locusts.

The former is 144 and the next is 196. 7th Pell number. The previous one is 70 and the next one is 408.

The 79th decimal digit of the equal digit. The former is 167 and the next is 173. The 8th central hexagon number.

Composites, positive divisors have and 169. The loss, the sum of the true divisor is 14, and the loss is 155. The 56th semi-prime number.

The first one is 166 for the trembling shed, and the next one is 177. The 13th square number is 13 squared. The former is 144 and the next is 196.

7th Pell number. Zheng Dongqiao has 70 in the previous one and 408 in the next. The 79th decimal digit of the equal digit.

The former is 167 and the next is 173. The 8th central hexagon number.

169 (one hundred and sixty-nine) is a natural number between 168 and 170. is an odd, composite, and squared number.

Other meanings: 1. Composite number, positive divisive number has and 169.

2. The loss, the sum of the true covenant is 14, and the deficit is 155.

3. The 56th semi-prime number. The former is 166 and the next is 177.

4. The 13th square number is 13 squares. The former is 144 and the next is 196.

5. The 7th Pell number. The former is 70 and the next is 408.

6. The 79th decimal digit of equal digits. The former is 167 and the next is 173.

7. The number of the 8th central hexagon.

By whether it is an even number or not.

It can be divided into odd and even numbers.

1. Odd number: A number that is not divisible by 2 is called an odd number.

2. Even numbers: Numbers divisible by 2 are called even numbers. That is, except for odd numbers, they are even numbers.

Note: 0 is an even number. (In 2002, the International Mathematical Association stipulated that zero is an even number.) In 2004, zero was also an even number. Even numbers are divisible by 2, and 0 is fine, but the number is still 0).

Score by the number of factors.

It can be divided into prime numbers, composite numbers, 1 and 0.

1. Prime number: A natural number with only two factors, 1 and itself, is called a prime number. Also known as prime numbers.

2. Composite: A natural number that has other factors besides 1 and itself is called a composite number.

There is only 1 factor. It is neither prime nor composite.

4. Of course, 0 cannot be calculated as a factor, and like 1, it is neither a prime number nor a composite number.

Note: The factor here is not a divisor.