1. Numbers
  2. Compare 257 vs 264

Compare 257 vs 264

Property257264
Typeprimecomposite number
Unique factors13
Total factors15
Prime factorization257123 × 31 × 111
Prime factorization2572 × 2 × 2 × 3 × 11
Divisors count216
Divisors1, 2571, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264
Number of properties160
Chen primes42nd 
Fermat primes4th 
Good primes20th 
Isolated primes22nd 
Long primes21st 
Pierpont primes14th 
Primes55th 
Proth primes10th 
Pythagorean primes25th 
Quartan primes4th 
Sexy primes (1st member)31st 
Sexy primes (2nd member)30th 
Sexy prime quadrupletss (2nd member)5th 
Sexy prime triplets (1st member)16th 
Sexy prime triplets (2nd member)15th 
Solinas primes31st 
Roman numberalsCCLVIICCLXIV
Base 210000000121000010002
Base 310011231002103
Base 4100014100204
Base 52012520245
Base 61105611206
Base 751575257
Base 840184108
Base 931593239
Base 102571026410
Base 112141122011
Base 12195121a012
Base 1316a1317413
Base 141451414c14
Base 151221512915
Base 161011610816
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