1. Numbers
  2. Compare 257 vs 268

Compare 257 vs 268

Property257268
Typeprimecomposite number
Unique factors12
Total factors13
Prime factorization257122 × 671
Prime factorization2572 × 2 × 67
Divisors count26
Divisors1, 2571, 2, 4, 67, 134, 268
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 numberalsCCLVIICCLXVIII
Base 210000000121000011002
Base 310011231002213
Base 4100014100304
Base 52012520335
Base 61105611246
Base 751575327
Base 840184148
Base 931593279
Base 102571026810
Base 112141122411
Base 12195121a412
Base 1316a1317813
Base 141451415214
Base 151221512d15
Base 161011610c16
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