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General Information, Facts & Tables
[Preferred Numbers]

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Overview

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The following table lists the preferred number series for the "R" and "E" series standards.
  

Preferred Number "R" Series

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DIN 323
R5

DIN 323
R10

DIN 323
R20

DIN 323
R40

Exact Values
= Prev * 10-40

1

1

1

1

1.000 000 000 000 00

-

-

-

1.06

1.059 253 725 177 29

-

-

1.12

1.12

1.122 018 454 301 96

-

-

-

1.19

1.188 502 227 437 02

-

1.26

1.26

1.26

1.258 925 411 794 17

-

-

-

1.33

1.333 521 432 163 32

-

-

1.41

1.41

1.412 537 544 622 75

-

-

-

1.5

1.496 235 656 094 43

1.58

1.58

1.58

1.58

1.584 893 192 461 11

-

-

-

1.68

1.678 804 018 122 56

-

-

1.78

1.78

1.778 279 410 038 92

-

-

-

1.88

1.883 649 089 489 80

-

2

2

2

1.995 262 314 968 88

-

-

-

2.11

2.113 489 039 836 65

-

-

2.24

2.24

2.238 721 138 568 34

-

-

-

2.37

2.371 373 705 661 65

2.51

2.51

2.51

2.51

2.511 886 431 509 58

-

-

-

2.66

2.660 725 059 798 81

-

-

2.82

2.82

2.818 382 931 264 45

-

-

-

2.99

2.985 382 618 917 96

-

3.16

3.16

3.16

3.162 277 660 168 38

-

-

-

3.35

3.349 654 391 578 28

-

-

3.55

3.55

3.548 133 892 335 75

-

-

-

3.76

3.758 374 042 884 44

3.98

3.98

3.98

3.98

3.981 071 705 534 97

-

-

-

4.22

4.216 965 034 285 82

-

-

4.47

4.47

4.466 835 921 509 63

-

-

-

4.73

4.731 512 589 614 80

-

5.01

5.01

5.01

5.011 872 336 272 72

-

-

-

5.31

5.308 844 442 309 88

-

-

5.62

5.62

5.623 413 251 903 49

-

-

-

5.96

5.956 621 435 290 11

6.31

6.31

6.31

6.31

6.309 573 444 801 93

-

-

-

6.68

6.683 439 175 686 15

-

-

7.08

7.08

7.079 457 843 841 38

-

-

-

7.5

7.498 942 093 324 56

-

7.94

7.94

7.94

7.943 282 347 242 82

-

-

-

8.41

8.413 951 416 451 95

-

-

8.91

8.91

8.912 509 381 337 46

-

-

-

9.44

9.440 608 762 859 24

10

10

10

10

10.000 000 000 000 00

 

Preferred Number "E" Series

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E6

E12

E24

Value

1

1

1

1.000 000 000 000 00

-

-

1.1

1.100 694 171 252 21

-

1.2

1.2

1.211 527 658 628 59

-

-

1.3

1.333 521 432 163 32

1.5

1.5

1.5

1.467 799 267 622 07

-

-

1.6

1.615 598 098 439 87

-

1.8

1.8

1.778 279 410 038 92

-

-

2.0

1.957 341 781 487 66

2.2

2.2

2.2

2.154 434 690 031 88

-

-

2.4

2.371 373 705 661 66

-

2.6

2.6

2.610 157 215 682 54

-

-

2.9

2.872 984 833 353 67

3.2

3.2

3.2

3.162 277 660 168 38

-

-

3.5

3.480 700 588 428 41

-

3.8

3.8

3.831 186 849 557 29

-

-

4.2

4.216 965 034 285 83

4.6

4.6

4.6

4.641 588 833 612 78

-

-

5.1

5.108 969 774 506 93

-

5.6

5.6

5.623 413 251 903 50

-

-

6.2

6.189 658 188 912 61

6.8

6.8

6.8

6.812 920 690 579 62

-

-

7.5

7.498 942 093 324 56

-

8.2

8.3

8.254 041 852 680 19

-

-

9.1

9.085 175 756 516 88

10

10

10.0

10.000 000 000 000 00