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Q: Is 42 is 21times 2 is that prime or composite?

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It's not. 2 x 3 x 7 = 42

Composite. 42 = 2 * 3 * 7

42 is composite; its factors are 2, 3, and 7. 42 is indeed a composite number and its factors are not only 2,3, and 7, but they are all 1,2,3,6,7,42.

42 is composite, 43 is prime.

No, 42 is a composite number, not a prime number. 42 is divisible by 2, 3, and 7. 42 has more than two factors and so it is a composite number. All even numbers greater than 2 are composite.

42 is a composite number; its factors are 1, 2, 3, 6, 7, 14, 21, 42. Every even number (except 2 itself) is composite.42 is a Composite Number.

42 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

2, 3, and 7

42 is a composite number; it has factors other than 1 and itself. It is not a prime number.The prime factors of 42 are 1, 2, 3, 7, 42

42 is a composite number because it is divisible by 6. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1, 2, and 0. 1, 2, and 0 have a different name.

It's an even number so 2 must be a factor so it is composite.

41 is prime, so the next composite is 42 (2*3*7).

Composite. All even numbers greater than 2 are composite.

42 is divisible by 2 (and other factors) so it is a composite number

42 is composite because it has 9 factors: 1, 2, 3, 6, 7, 14, 21, and 42.

It is a composite number because it has more than 2 factors

21 and 6 are two composite numbers that have 42 as a common multiple. One of the prime factors of 42, which is 3, is a prime factor of 21 and 6 as well. The prime factorization of 42 (2 x 3 x 7) includes the prime factorization of 21 (3 x 7) and 6 (2 x 3).

Composite

It would be impossible to list them all, since numbers go on forever, but here are some of them: 2 - Prime 3 - Prime 4 - Composite 5 - Prime 6 - Composite 7 - Prime 8 - Composite 9 - Composite 10 - Composite 11 - Prime 12 - Composite 13 - Prime 14 - Composite 15 - Composite 16 - Composite 17 - Prime 18 - Composite 19 - Prime 20 - Composite 21 - Composite 22 - Composite 23 - Prime 24 - Composite 25 - Composite 26 - Composite 27 - Composite 28 - Composite 29 - Prime 30 - Composite 31 - Prime 32 - Composite 33 - Composite 34 - Composite 35 - Composite 36 - Composite 37 - Prime 38 - Composite 39 - Composite 40 - Composite 41 - Prime 42 - Composite 43 - Prime 44 - Composite 45 - Composite 46 - Composite 47 - Prime 48 - Composite 49 - Composite 50 - Composite

42 is a composite number because it has at least one positive factor other than one or itself. The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.

Composite. Its prime factors are 2×2×7.

2 is a prime number. 18 is a composite number.

2 is a prime number and 15 is a composite number.

It is a prime.

composite and 2*2*7 = 28