Compare 642639 vs 642642

Property	642639	642642
Type	semiprime	composite number
Unique factors	2	6
Total factors	2	6
Prime factorization	3¹ × 214213¹	2¹ × 3¹ × 7¹ × 11¹ × 13¹ × 107¹
Prime factorization	3 × 214213	2 × 3 × 7 × 11 × 13 × 107
Divisors count	4	64
Divisors	1, 3, 214213, 642639	1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 107, 143, 154, 182, 214, 231, 273, 286, 321, 429, 462, 546, 642, 749, 858, 1001, 1177, 1391, 1498, 2002, 2247, 2354, 2782, 3003, 3531, 4173, 4494, 6006, 7062, 8239, 8346, 9737, 15301, 16478, 19474, 24717, 29211, 30602, 45903, 49434, 58422, 91806, 107107, 214214, 321321, 642642
Number of properties	1	0
Semiprimes	137695th
Roman numberals
Base 2	10011100111001001111₂	10011100111001010010₂
Base 3	1012122112110₃	1012122112120₃
Base 4	2130321033₄	2130321102₄
Base 5	131031024₅	131031032₅
Base 6	21435103₆	21435110₆
Base 7	5314404₇	5314410₇
Base 8	2347117₈	2347122₈
Base 9	1178473₉	1178476₉
Base 10	642639₁₀	642642₁₀
Base 11	3a9908₁₁	3a9910₁₁
Base 12	26ba93₁₂	26ba96₁₂
Base 13	19667a₁₃	196680₁₃
Base 14	12a2ab₁₄	12a2b0₁₄
Base 15	ca629₁₅	ca62c₁₅
Base 16	9ce4f₁₆	9ce52₁₆