Compare 661979 vs 661990

Property	661979	661990
Type	semiprime	composite number
Unique factors	2	4
Total factors	2	6
Prime factorization	19¹ × 34841¹	2¹ × 5¹ × 7³ × 193¹
Prime factorization	19 × 34841	2 × 5 × 7 × 7 × 7 × 193
Divisors count	4	32
Divisors	1, 19, 34841, 661979	1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 193, 245, 343, 386, 490, 686, 965, 1351, 1715, 1930, 2702, 3430, 6755, 9457, 13510, 18914, 47285, 66199, 94570, 132398, 330995, 661990
Number of properties	1	0
Semiprimes	141647th
Roman numberals
Base 2	10100001100111011011₂	10100001100111100110₂
Base 3	1020122001202₃	1020122002011₃
Base 4	2201213123₄	2201213212₄
Base 5	132140404₅	132140430₅
Base 6	22104415₆	22104434₆
Base 7	5424653₇	5425000₇
Base 8	2414733₈	2414746₈
Base 9	1218052₉	1218064₉
Base 10	661979₁₀	661990₁₀
Base 11	41239a₁₁	4123aa₁₁
Base 12	27b10b₁₂	27b11a₁₂
Base 13	1a2406₁₃	1a2414₁₃
Base 14	133363₁₄	133370₁₄
Base 15	d121e₁₅	d122a₁₅
Base 16	a19db₁₆	a19e6₁₆