51.27.23.2.54.37.15.12.10.1. Which are prime numbers and which are composite numbers

Prime 2 23 37
Total 10 12 15 27 51 54
Prime number is also called prime number. It refers to the number in a natural number greater than 1 which can not be divided by other natural numbers except 1 and the integer itself. In other words, natural numbers with only two positive factors (1 and itself) are prime numbers. Numbers larger than 1 but not prime numbers are called composite numbers. 1 and 0 are neither prime nor composite numbers. Prime numbers play an important role in number theory

RELATED INFORMATIONS

1. 17 / 37
2. The following numbers are 27, 37, 41, 51, 7, 15, 34, 19, 57, 91, 23, 69
3. 7 11 19 27 39 51 67
4. 20.22.25.30.37. () what's the rule?
5. Fill in the number 20 22 25 30 37 ()
6. What is the number 10 of 7, 13, 22 and 37
7. Find the Rule 13 22 37 52 the next number is
8. 39 out of 51, 20 out of 90 and 22 out of 44 480ml = () \ \ () l 2750g = () \ \ () kg vs. 4.5 and 19.4 The sum of the numerator and denominator of a minimalist fraction is 9. There are three fractions. Please fill in the brackets below （）\（）＜（）\（）＜（）\（）
9. Xiaosun bought a whole box of milk from the supermarket. As shown in the picture, there are 12 bags of milk in each box of this specification. The weight of each bag of milk is 250 grams. After careful inspection, he found that the words "net content: 243ml" were printed on the package (1) The density of this kind of milk. (2) when the whole box of milk is placed on the horizontal ground, the contact area between the box and the ground is 0.05m2, what is the pressure of this box of milk on the ground? (two decimal places shall be reserved after the decimal point, regardless of the quality of boxes and bags.)
10. 2, 3, 6, 11, (), 27, 38
11. Write the greatest common factors 35 and 40 16 and 24 13 and 36 45 and 46 55 and 44 30 and 45 3 and 10 34 and 51 for each group
12. The greatest common factors of 51 and 68144 and 36, 33 and 88 are
13. The greatest common factor of 120 and 44? The greatest common factor of 120 and 36? The greatest common factor of 120 and 40 /
14. Divide the eight numbers 34, 38, 51, 55, 57, 65, 77 and 91 into two groups with four numbers in each group to make their products equal, Let's use the equation to express these two groups of equal multiplication,
15. The six numbers 85, 5L, 33, 91, 65 and 77 are divided into two groups with three numbers in each group. The product of the three numbers in each group is equal. What are they? Why? Divide the six numbers 85, 5L, 33, 91, 65 and 77 into two groups. Each group has three numbers. The product of the three numbers in each group is equal. They are sum
16. 34 26 105 84 65 92 98 75 78 87 91 136 46 85 52 27 51 76 39 111 38 62 135 150 225 196 169 92 74 114
17. 90°-30°15′20〃= 15°51′×2= 55°28′+42°32′-13°27′= 176°52÷3= 90°-30°15′20〃= 15°51′×2= 55°28′+42°32′-13°27′= 176°52′÷3=
18. If (5,7) = 74, (4,6) = 52, (3,5) = 34, then (0,4) = () a.53 b.51 c.26 d.16 There is no language in this question, there is only one law! 1、 5 * 7 * 2 + 4 = 74 4*6*2+4=52 3*5*2+4=34 So (0,4) = 0 * 4 * 2 + 4 = 4 2、 (5 + 7) * 6 + 2 = 74 （4+6）*5+2=52 （3+5）*4+2=34 So (0,4) = (0 + 4) * 3 + 2 = 2 3、 5 * 12 + 7 * 2 = 74 4*10+6*2=52 3*8+5*2=34 So (0,4) = 0 * 6 + 4 * 2 = 8
19. How much is 1 / 2 * 3 + 1 / 4 * 5 + 1 / 5 * 6 +. + 1 / 98 * 98 + 1 / 51 + 1 / 52 +. 1 / 100?
20. 1/1,1/2,2/1,1/3,2/2,3/1,1/4,2/3,3/2,4/1…… According to the above arrangement, the 51st score is ()