Who can tell me what a three-digit prime number is?

There are infinite prime numbers, also called prime numbers. The definition of prime number is a number with no other factors except 1 and itself among natural numbers greater than 1.

All natural numbers can be divided into three categories:

Prime number-A number that has no divisor except 1 and itself. The only even number in the prime number is 2, and the rest of the prime numbers are odd numbers. Because each composite number can be written in the form of multiplication of several prime numbers, prime numbers can be said to be "bricks" that constitute natural numbers.

Composite number-a number divisible by other numbers except 1 and itself. The smallest composite number is 4. Each composite number can be written as the multiplication of several prime numbers (also called prime numbers), which are called prime factors of this composite number.

1 This number is very special. It is neither a prime number nor a composite number, but an independent category.

Three-digit prime numbers up to 143:

10 1 103 107 109 1 13 127 13 1 137 139 149 / kloc-0/5 1 157 1 63 167 173 179 18 1 19 1 193 197 / kloc-0/99 2 1 1 223 227 229 233 239 24 1 25 1 257 263 269 27 1 277 28 1 283 293 307 3 1 1 3 / kloc-0/3 3 17 33 1 337 347 349 353 359 367 373 379 383 389 397 40 1 409 4 19 42 1 43 1? 433 439 443 449 457 46 1 463 467 479 487 49 1 499 503 509 52 1 523 54 1 547 557 563 569 57 1 577 587 593 599 60 / kloc-0/ 607 665 438+03 6 17 6 19 63 1 64 1 643 647 653 659 66 1 673 677 683 69 1 70 1 709 7 1 9 727 733 739 743 75 1 757 76 1 769 773 787 797 809 8 1 1 82 1 823 827 829 839 853 857 859 863 877 88 1 883 887 907 9 1 1 9 19 929 937 94 1 947 953 967 97 1 977 983 99 1 997

If a quadratic root has a prime number below the root sign, it means that the quadratic root must be the simplest quadratic root, such as √2, 2√3, 5√5, √ 149 and so on.