430

[Tech.] 430(W) is one of standard numerical values for resistors (of tolerance class 5%). 430pF (picofarads) is one of standard numerical values for capacitors.

[World] The ISO-3166 country code for Liberia.

431

[Math.]  A prime number.

432

[Math.]  432 = 4×33×22.

[Sport]  The number of dimples on a golf ball usually are: 252, 286, 332, 336, 360, 384, 392, 410, 416, 420, 422, 432, 440, 480, 492 or 500. (References [6])

[Tech.]  The longer side (mm, millimeters) of the U.S. standard paper size “Ledger/Tabloid” (17 in×11 in, 432 mm×279 mm).

433

[Math.]  A prime number.

[Math.]  4334 = 35,152,125,121 and 035+152+125+121 = 433.

[Math.]   (343+656 = 999 = 323+676)

3432 = 117,649 & 117+649 = 766

6562 = 430,336 & 430+336 = 766

and

3232 = 104,329 & 104+329 = 433

6762 = 456,976 & 456+976 = 1432 and 1+432 = 433.

[Math.]  The first Markov numbers are 1, 2, 5, 13, 29, 34, 89, 169, 194, 233, 433, 610, 985, 1325, 1597, 2897, 4181, 5741, 6466, 7561, 9077, 10946...

[Sport]  One of soccer’s possible lineup tactics formations: 4-3-3 (4 defenders, 3 midfielders and 3 forwards). A slightly modified defenders line makes: 1-3-3-3 (1 sweeper), or 3-1-3-3 (1 stopper). A slightly modified forwards line makes: (Christmas Tree) 4-3-2-1 (1 striker) or 4-3-1-2 (2 strikers).

434

[Math.]  454+545 = 999 = 434+565

4542 = 206,116 & 206+116 = 322

5452 = 297,025 & 297+025 = 322

and

4342 = 188,356 & 188+356 = 544

5652 = 319,225 & 319+225 = 544.

[Math.]  All 3 numbers 1,999,899, 1,999,900 and 1,999,901 have all their 404th, 414th, 424th, 434th, 444th and 454th powers starting with digits 404, 414, 424, 434, 444 and 454, respectively.

[Math.]  All numbers in the range [19,998,989-19,999,012] have all their 404th, 414th, 424th, 434th, 444th and 454th powers starting with digits 404, 414, 424, 434, 444 and 454, respectively.

[World]  The ISO-3166 country code for Libyan Arab Jamahiriya.

435

[Gov.]  The number of U.S. Congress representatives (or Congressmen); since 1911 and became permanent after the U.S. Census 1980. (As of 2006).

[Math.]  A triangular number (sum of all integers from 1 to 29): 435 = 1+2+…+28+29.

436

[Movie] Name of TV show/series or movie: “Population 436”.

437

[Tech.]  The number of days of the longest time duration spent by a human in outer space: Valery Polyakov in 1994-1995 aboard the Russian space station Mir.

[Math.]  4373 = 83,453,453.

[Measure] The number of grains in an ounce (oz): 437.5

British imperial units for weight measures: 1 stone = 14 lb (pounds) = 224 oz (ounces) = 3584 drams = 98,000 grains = 6350.29318 g (grams) & 1 grain = 64.79891 mg (milligrams) & 1 ounce = 16 drams = 437.5 grains & 1 dram = 2711/32 grains.

438

[Math.]  Sum 219+438 = 657 is one of only 4 cases that the equality: n+2n = 3n use each of 9 digits 1-9 once: n = 192, 219, 273 and 327.

[World]  The ISO-3166 country code for Liechtenstein.

439

[Math.]  A prime number.

430-439

[Library]  Numbers 400-499 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Languages and Linguistics. Numbers 430-439 are for books in German and Scandinavian Languages.

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References [6]: Scientific American, I. Stewart, Mathematical Recreations, February 1997.