Number 421

421 is prime.

421 prime factorization is 421¹

421 prime factorization is 421

Divisors (2): 1, 421

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Properties#

421 is 48th additive prime because sum of its digits is 7 which is also prime
421 is 8th centered square prime for n = 14
421 is 23rd lucky prime
421 is 82nd prime
421 is 40th pythagorean prime
421 is part of 22nd twin prime {419, 421}

External#

Neighbours#

409₉	410	411₁	412	413₁
414	415₁	416	417₁	418
419₆	420	421₆	422₁	423
424	425	426	427₁	428
429	430	431₁₀	432	433₈

Compare with#

409₉	410	411₁	412	413₁
414	415₁	416	417₁	418
419₆	420	421₆	422₁	423
424	425	426	427₁	428
429	430	431₁₀	432	433₈

Different Representations#

421 in roman numerals is CDXXI
421 in base 2 is 110100101₂
421 in base 3 is 120121₃
421 in base 4 is 12211₄
421 in base 5 is 3141₅
421 in base 6 is 1541₆
421 in base 7 is 1141₇
421 in base 8 is 645₈
421 in base 9 is 517₉
421 in base 10 is 421₁₀
421 in base 11 is 353₁₁
421 in base 12 is 2b1₁₂
421 in base 13 is 265₁₃
421 in base 14 is 221₁₄
421 in base 15 is 1d1₁₅
421 in base 16 is 1a5₁₆

Belongs Into#

421 belongs into first 50 additive primes.
421 belongs into first 10 centered square primes.
421 belongs into first 50 lucky primes.
421 belongs into first 100 primes.
421 belongs into first 50 pythagorean primes.
421 belongs into first 50 twin primes.

As Timestamp#

0 + 1 * 421: Convert timestamp 421 to date is 1970-01-01 00:07:01
0 + 1000 * 421: Convert timestamp 421000 to date is 1970-01-05 20:56:40
1300000000 + 1000 * 421: Convert timestamp 1300421000 to date is 2011-03-18 04:03:20
1400000000 + 1000 * 421: Convert timestamp 1400421000 to date is 2014-05-18 13:50:00
1500000000 + 1000 * 421: Convert timestamp 1500421000 to date is 2017-07-18 23:36:40
1600000000 + 1000 * 421: Convert timestamp 1600421000 to date is 2020-09-18 09:23:20
1700000000 + 1000 * 421: Convert timestamp 1700421000 to date is 2023-11-19 19:10:00

You May Also Ask#

Smaller than 421#

First 421#

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