Prime number is a natural number which is more than 1 has 2 different natural divisors: 1 and this number itself. For instance, 7 is a prime number, but 10 is not a prime number because it is divisible by 2 and 5.
This online exerciser will help you to divide each composite number into prime factors. Enter a number in the box and click "Calculate". As a result you will see a detailed answer with an explanation.
A composite number is a natural number which has divisors other than 1 and the number itself. In other words, composite numbers are all not prime numbers. 1 is neither prime nor composite number.
Table of prime numbers up to 1000
2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 |
31 | 37 | 41 | 43 | 47 | 53 | 59 | 61 | 67 | 71 |
73 | 79 | 83 | 89 | 97 | 101 | 103 | 107 | 109 | 113 |
127 | 131 | 137 | 139 | 149 | 151 | 157 | 163 | 167 | 173 |
179 | 181 | 191 | 193 | 197 | 199 | 211 | 223 | 227 | 229 |
233 | 239 | 241 | 251 | 257 | 263 | 269 | 271 | 277 | 281 |
283 | 293 | 307 | 311 | 313 | 317 | 331 | 337 | 347 | 349 |
353 | 359 | 367 | 373 | 379 | 383 | 389 | 397 | 401 | 409 |
419 | 421 | 431 | 433 | 439 | 443 | 449 | 457 | 461 | 463 |
467 | 479 | 487 | 491 | 499 | 503 | 509 | 521 | 523 | 541 |
547 | 557 | 563 | 569 | 571 | 577 | 587 | 593 | 599 | 601 |
607 | 613 | 617 | 619 | 631 | 641 | 643 | 647 | 653 | 659 |
661 | 673 | 677 | 683 | 691 | 701 | 709 | 719 | 727 | 733 |
739 | 743 | 751 | 757 | 761 | 769 | 773 | 787 | 797 | 809 |
811 | 821 | 823 | 827 | 829 | 839 | 853 | 857 | 859 | 863 |
877 | 881 | 883 | 887 | 907 | 911 | 919 | 929 | 937 | 941 |
947 | 953 | 967 | 971 | 977 | 983 | 991 | 997 | 1009 | 1013 |