1. Numbers
  2. Compare 1285 vs 1290

Compare 1285 vs 1290

Property12851290
Typesemiprimecomposite number
Unique factors24
Total factors24
Prime factorization51 × 257121 × 31 × 51 × 431
Prime factorization5 × 2572 × 3 × 5 × 43
Divisors count416
Divisors1, 5, 257, 12851, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290
Number of properties10
Semiprimes378th 
Roman numberalsMCCLXXXVMCCXC
Base 2101000001012101000010102
Base 31202121312022103
Base 411001141100224
Base 5201205201305
Base 65541655506
Base 73514735227
Base 82405824128
Base 91677916839
Base 10128510129010
Base 11a6911a7311
Base 128b1128b612
Base 1377b1378313
Base 1467b1468214
Base 155aa155b015
Base 165051650a16
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