Number 20021

20021 is prime.

20021 prime factorization is 20021¹

20021 prime factorization is 20021

Divisors (2): 1, 20021

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Properties#

20021 is 1051st additive prime because sum of its digits is 5 which is also prime
20021 is 1113th chen prime
20021 is 822nd harmonic prime
20021 is 2264th prime
20021 is 1126th pythagorean prime
20021 is part of 343rd twin prime {20021, 20023}

External#

Neighbours#

20009	20010	20011₃	20012	20013
20014₁	20015₁	20016	20017₁	20018₁
20019₁	20020	20021₆	20022	20023₄
20024	20025	20026	20027₁	20028
20029₅	20030	20031	20032	20033

Compare with#

20009	20010	20011₃	20012	20013
20014₁	20015₁	20016	20017₁	20018₁
20019₁	20020	20021₆	20022	20023₄
20024	20025	20026	20027₁	20028
20029₅	20030	20031	20032	20033

Different Representations#

20021 in base 2 is 100111000110101₂
20021 in base 3 is 1000110112₃
20021 in base 4 is 10320311₄
20021 in base 5 is 1120041₅
20021 in base 6 is 232405₆
20021 in base 7 is 112241₇
20021 in base 8 is 47065₈
20021 in base 9 is 30415₉
20021 in base 10 is 20021₁₀
20021 in base 11 is 14051₁₁
20021 in base 12 is b705₁₂
20021 in base 13 is 9161₁₃
20021 in base 14 is 7421₁₄
20021 in base 15 is 5deb₁₅
20021 in base 16 is 4e35₁₆

Belongs Into#

20021 belongs into first 1000 additive primes.
20021 belongs into first 1000 chen primes.
20021 belongs into first 1000 harmonic primes.
20021 belongs into first 1000 primes.
20021 belongs into first 1000 pythagorean primes.
20021 belongs into first 500 twin primes.

As Timestamp#

0 + 1 * 20021: Convert timestamp 20021 to date is 1970-01-01 05:33:41
0 + 1000 * 20021: Convert timestamp 20021000 to date is 1970-08-20 17:23:20
1300000000 + 1000 * 20021: Convert timestamp 1320021000 to date is 2011-10-31 00:30:00
1400000000 + 1000 * 20021: Convert timestamp 1420021000 to date is 2014-12-31 10:16:40
1500000000 + 1000 * 20021: Convert timestamp 1520021000 to date is 2018-03-02 20:03:20
1600000000 + 1000 * 20021: Convert timestamp 1620021000 to date is 2021-05-03 05:50:00
1700000000 + 1000 * 20021: Convert timestamp 1720021000 to date is 2024-07-03 15:36:40

You May Also Ask#

Smaller than 20021#

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