1. Numbers
  2. Compare 1531 vs 1540

Compare 1531 vs 1540

Property15311540
Typeprimecomposite number
Unique factors14
Total factors15
Prime factorization1531122 × 51 × 71 × 111
Prime factorization15312 × 2 × 5 × 7 × 11
Divisors count224
Divisors1, 15311, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540
Number of properties50
Centered decagonal primes13th 
Isolated primes143rd 
Long primes91st 
Primes242nd 
Ulam primes22nd 
Roman numberalsMDXXXIMDXL
Base 2101111110112110000001002
Base 32002201320100013
Base 411332341200104
Base 5221115221305
Base 6110316110446
Base 74315743307
Base 82773830048
Base 92081921019
Base 10153110154010
Base 11117211118011
Base 12a7712a8412
Base 1390a1391613
Base 147b5147c014
Base 156c1156ca15
Base 165fb1660416
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