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Prime Numbers
A prime number is a number that has exactly two factors: 1 and itself. All whole numbers greater than 1 are either prime numbers or can be written as the product of prime numbers. There are an infinite number of prime numbers, but they occur less frequently among larger numbers. Prime numbers are important in cryptography and number theory.
30,833 Questions
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What is the only 3-digit prime number?
There are quite a few.
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
How do you find which is prime and composite number?
if a number is divisible by any other number other than the number itself and 1 , then it is a composite number and if not divisible by any other number other than 1 or the number itself , then it is a prime number . to find it out easyly , take the 1st prime number , that is 2 and eliminate all multiples of 2 from composite number list , then take the next number which is left . i.e. 3 , remove all multiples of 3 and then take the next number left that is 5 and do the same then 7 , then 11 , then 13 , then 17 , then 19 , then 23 , thne 29 , then 31 , then 37 , then 41 , then 47 , then 49 and so on
What list of the composite numbers are between 89 and 97?
Composite numbers between 89 and 97 are 90, 92, 93, 94, 95, 96.
Can a square number be a prime?
No, a prime number can't be a square number.
The definition of primes says that a prime number can only have 1 and itself as positive factors. For example, 13 only has two factors - 1 and 13.
A square number is a number multiplied by itself, so it has an additional factor. For example, 9 has three factors - 1, 3, and 9.
