Prime Numbers

241 is a prime number. Any number that only has itself and one as factors is a prime number. Therefore, since there are no factors of 241 other than one and itself it is a prime number.

2 x 2 x 3 x 3 x 5 = 180

2 x 2 x 2 x 5 x 5 = 200

2 x 2 x 2 x 3 x 3 x 5 = 360

421 is a prime number so it does not have prime factorization.

The prime factors of 91 are 7 and 13. 13 is a prime number so only has 1 and itself as factors. Therefore the only common factors for 13 and 91 are 1 and 13.

-- If you accept decimals and fractions, then there are an infinite number of pairs that

satisfy that description.

-- If you only want to consider whole numbers, then there are only two possible pairs:

1 and 13

-1 and -13

There are three: 2, 5 and 23.

Yes.

it is 24, 24 divide by five is 4 with a remainder of four.

24 divided by 5= 4 =20 +4= 24

210 = 21x10 = (3x7)(2x5) = 2x3x5x7.

The following sets of factors all fit the conditions of the question:

2,3,5,7; 5,6,7; 2,7,15; 2,3,35; 3,10,7; 2,5,21 and 3,5,14.

no

Only 1 2 3

1 x 3 x 13

107 is, itself, a prime number.

43 is already prime.

All irrational numbers, all rational numbers that have a fractional part, 0 and 1.

numbers that do not end in 0, 2, 4, 5, 6 or 8; numbers whose digits do not total 3 or a multiple of 3

22 x 111 = 44

composite because it has more than two factors

Numbers are relatively prime when their GCF is 1.

There is no common factor other than 1.

Common multiples are all numbers of the for 51*k where k is any integer.

Yes.

settalite

2 x 2 x 23 = 92

yes