100,000 in Roman numerals, how to write?

100,000 = (C)
99,999 = ? ... 100,001 = ?

In Roman numerals online converter

Latest conversions of numbers to Roman numerals

100,000 = (C) Aug 20 12:53 UTC (GMT)
811,378 = (D)(C)(C)(C)(X)MCCCLXXVIII Aug 20 12:53 UTC (GMT)
255,605 = (C)(C)(L)(V)DCV Aug 20 12:53 UTC (GMT)
378,473 = (C)(C)(C)(L)(X)(X)(V)MMMCDLXXIII Aug 20 12:53 UTC (GMT)
2,583 = MMDLXXXIII Aug 20 12:53 UTC (GMT)
28 = XXVIII Aug 20 12:53 UTC (GMT)
342,456 = (C)(C)(C)(X)(L)MMCDLVI Aug 20 12:53 UTC (GMT)
346 = CCCXLVI Aug 20 12:53 UTC (GMT)
686,508 = (D)(C)(L)(X)(X)(X)(V)MDVIII Aug 20 12:53 UTC (GMT)
98,434 = (X)(C)(V)MMMCDXXXIV Aug 20 12:53 UTC (GMT)
22,236 = (X)(X)MMCCXXXVI Aug 20 12:53 UTC (GMT)
74,818 = (L)(X)(X)M(V)DCCCXVIII Aug 20 12:53 UTC (GMT)
102,553 = (C)MMDLIII Aug 20 12:53 UTC (GMT)
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Roman numerals reading rules, summary: