Number 23

23 is prime.

23 prime factorization is 23¹

23 prime factorization is 23

Divisors (2): 1, 23

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Properties#

23 is 6th additive prime because sum of its digits is 5 which is also prime
23 is 9th chen prime
23 is 7th class 1+ prime
23 is part of 4th cousin prime {19, 23}
23 is 5th factorial prime
23 is 4th happy prime
23 is 4th harmonic prime
23 is 2nd isolated prime
23 is 3rd kynea prime
23 is 7th left-truncatable prime
23 is 4th long prime
23 is 7th pierpont prime of the 2nd kind
23 is 9th prime
23 is part of 2nd prime quintuplet 2 {11, 13, 17, 19, 23}
23 is part of 1st prime sextuplet {7, 11, 13, 17, 19, 23}
23 is part of 5th prime triplet {17, 19, 23}
23 is 5th right-truncatable prime
23 is 4th safe prime, its corresponding Sophie Germain prime is 11
23 is part of 6th sexy prime {23, 29}
23 is part of 5th sexy prime {17, 23}
23 is part of 2nd sexy prime quadruplets {11, 17, 23, 29}
23 is part of 1st sexy prime quadruplets {5, 11, 17, 23}
23 is part of 4th sexy prime triplet {17, 23, 29}
23 is part of 3rd sexy prime triplet {11, 17, 23}
23 is 8th solinas prime
23 is 5th sophie germain prime, its corresponding Safe prime is 47
23 is 4th thabit prime
23 is 5th two-sided prime
23 is 4th wedderburn-etherington prime
23 is 2nd woodall prime

External#

Neighbours#

11₃₆	12	13₃₂	14₁	15₁
16	17₃₆	18	19₁₈	20
21₁	22₁	23₃₀	24	25₁
26₁	27	28	29₁₄	30
31₁₈	32	33₁	34₁	35₁

Compare with#

11₃₆	12	13₃₂	14₁	15₁
16	17₃₆	18	19₁₈	20
21₁	22₁	23₃₀	24	25₁
26₁	27	28	29₁₄	30
31₁₈	32	33₁	34₁	35₁

Different Representations#

23 in roman numerals is XXIII
23 in base 2 is 10111₂
23 in base 3 is 212₃
23 in base 4 is 113₄
23 in base 5 is 43₅
23 in base 6 is 35₆
23 in base 7 is 32₇
23 in base 8 is 27₈
23 in base 9 is 25₉
23 in base 10 is 23₁₀
23 in base 11 is 21₁₁
23 in base 12 is 1b₁₂
23 in base 13 is 1a₁₃
23 in base 14 is 19₁₄
23 in base 15 is 18₁₅
23 in base 16 is 17₁₆

Belongs Into#

23 belongs into first 10 additive primes.
23 belongs into first 10 chen primes.
23 belongs into first 10 class 1+ primes.
23 belongs into first 10 cousin primes.
23 belongs into first 10 factorial primes.
23 belongs into first 10 happy primes.
23 belongs into first 10 harmonic primes.
23 belongs into first 10 isolated primes.
23 belongs into first 10 kynea primes.
23 belongs into first 10 left-truncatable primes.
23 belongs into first 10 long primes.
23 belongs into first 10 pierpont prime of the 2nd kinds.
23 belongs into first 10 primes.
23 belongs into first 10 prime quintuplet 2s.
23 belongs into first 10 prime sextuplets.
23 belongs into first 10 prime triplets.
23 belongs into first 10 right-truncatable primes.
23 belongs into first 10 safe primes.
23 belongs into first 10 sexy primes.
23 belongs into first 10 sexy primes.
23 belongs into first 10 sexy prime quadrupletss.
23 belongs into first 10 sexy prime quadrupletss.
23 belongs into first 10 sexy prime triplets.
23 belongs into first 10 sexy prime triplets.
23 belongs into first 10 solinas primes.
23 belongs into first 10 sophie germain primes.
23 belongs into first 10 thabit primes.
23 belongs into first 10 two-sided primes.
23 belongs into first 10 wedderburn-etherington primes.
23 belongs into first 10 woodall primes.

As Timestamp#

0 + 1 * 23: Convert timestamp 23 to date is 1970-01-01 00:00:23
0 + 1000 * 23: Convert timestamp 23000 to date is 1970-01-01 06:23:20
1300000000 + 1000 * 23: Convert timestamp 1300023000 to date is 2011-03-13 13:30:00
1400000000 + 1000 * 23: Convert timestamp 1400023000 to date is 2014-05-13 23:16:40
1500000000 + 1000 * 23: Convert timestamp 1500023000 to date is 2017-07-14 09:03:20
1600000000 + 1000 * 23: Convert timestamp 1600023000 to date is 2020-09-13 18:50:00
1700000000 + 1000 * 23: Convert timestamp 1700023000 to date is 2023-11-15 04:36:40

You May Also Ask#

Smaller than 23#

First 23#

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