1. Numbers
  2. Compare 643 vs 648

Compare 643 vs 648

Property643648
Typeprimecomposite number
Unique factors12
Total factors17
Prime factorization643123 × 34
Prime factorization6432 × 2 × 2 × 3 × 3 × 3 × 3
Divisors count220
Divisors1, 6431, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
Number of properties70
Additive primes63rd 
Cousin primes (1st member)29th 
Left-truncatable primes38th 
Lucky primes33rd 
Primes117th 
Prime triplets (2nd member)24th 
Twin primes (2nd member)29th 
Roman numberalsDCXLIIIDCXLVIII
Base 21010000011210100010002
Base 321221132200003
Base 4220034220204
Base 5100335100435
Base 62551630006
Base 71606716147
Base 81203812108
Base 978498009
Base 106431064810
Base 115351153a11
Base 124571246012
Base 133a6133ab13
Base 1433d1434414
Base 152cd152d315
Base 162831628816
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