1. Numbers
  2. Compare 661231 vs 661242

Compare 661231 vs 661242

Property661231661242
Typeprimecomposite number
Unique factors14
Total factors14
Prime factorization661231121 × 31 × 1911 × 5771
Prime factorization6612312 × 3 × 191 × 577
Divisors count216
Divisors1, 6612311, 2, 3, 6, 191, 382, 573, 577, 1146, 1154, 1731, 3462, 110207, 220414, 330621, 661242
Number of properties50
Additive primes20951st 
Chen primes20995th 
Isolated primes42084th 
Primes53667th 
Sexy primes (1st member)11588th 
Roman numberals  
Base 2101000010110111011112101000010110111110102
Base 31020121001001310201210011103
Base 42201123233422011233224
Base 513212441151321244325
Base 6221011316221011506
Base 75422534754225517
Base 82413357824133728
Base 91217031912170439
Base 106612311066124210
Base 1141187a1141188a11
Base 1227a7a71227a7b612
Base 131a1c7c131a1c8a13
Base 14132d8b14132d9814
Base 15d0dc115d0dcc15
Base 16a16ef16a16fa16
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