1. Numbers
  2. Compare 257 vs 260

Compare 257 vs 260

Property257260
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization257122 × 51 × 131
Prime factorization2572 × 2 × 5 × 13
Divisors count212
Divisors1, 2571, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260
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 numberalsCCLVIICCLX
Base 210000000121000001002
Base 310011231001223
Base 4100014100104
Base 52012520205
Base 61105611126
Base 751575217
Base 840184048
Base 931593189
Base 102571026010
Base 112141121711
Base 121951219812
Base 1316a1317013
Base 141451414814
Base 151221512515
Base 161011610416
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