Compare 23 vs 40

Typeprimecomposite number
Unique factors12
Total factors14
Prime factorization23123 × 51
Prime factorization232 × 2 × 2 × 5
Divisors count28
Divisors1, 231, 2, 4, 5, 8, 10, 20, 40
Number of properties300
Additive primes6th 
Chen primes9th 
Class 1+ primes7th 
Cousin primes (2nd member)4th 
Factorial primes5th 
Happy primes4th 
Harmonic primes4th 
Isolated primes2nd 
Kynea primes3rd 
Left-truncatable primes7th 
Long primes4th 
Pierpont primes of the 2nd kind7th 
Prime quintuplet 2s (5th member)2nd 
Prime sextuplets (6th member)1st 
Prime triplets (3rd member)5th 
Right-truncatable primes5th 
Safe primes4th 
Sexy primes (1st member)6th 
Sexy primes (2nd member)5th 
Sexy prime quadrupletss (4th member)1st 
Sexy prime quadrupletss (3rd member)2nd 
Sexy prime triplets (2nd member)4th 
Sexy prime triplets (3rd member)3rd 
Solinas primes8th 
Sophie germain primes5th 
Thabit primes4th 
Two-sided primes5th 
Wedderburn-etherington primes4th 
Woodall primes2nd 
Roman numberalsXXIIIXL
Base 21011121010002
Base 3212311113
Base 411342204
Base 54351305
Base 63561046
Base 7327557
Base 8278508
Base 9259449
Base 1023104010
Base 1121113711
Base 121b123412
Base 131a133113
Base 1419142c14
Base 1518152a15
Base 1617162816
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