Compare 199920 vs 199921

Property	199920	199921
Type	composite number	prime
Unique factors	5	1
Total factors	9	1
Prime factorization	2⁴ × 3¹ × 5¹ × 7² × 17¹	199921¹
Prime factorization	2 × 2 × 2 × 2 × 3 × 5 × 7 × 7 × 17	199921
Divisors count	120	2
Divisors	1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 49, 51, 56, 60, 68, 70, 80, 84, 85, 98, 102, 105, 112, 119, 120, 136, 140, 147, 168, 170, 196, 204, 210, 238, 240, 245, 255, 272, 280, 294, 336, 340, 357, 392, 408, 420, 476, 490, 510, 560, 588, 595, 680, 714, 735, 784, 816, 833, 840, 952, 980, 1020, 1176, 1190, 1360, 1428, 1470, 1666, 1680, 1785, 1904, 1960, 2040, 2352, 2380, 2499, 2856, 2940, 3332, 3570, 3920, 4080, 4165, 4760, 4998, 5712, 5880, 6664, 7140, 8330, 9520, 9996, 11760, 12495, 13328, 14280, 16660, 19992, 24990, 28560, 33320, 39984, 49980, 66640, 99960, 199920	1, 199921
Number of properties	0	5
Additive primes		7221st
Isolated primes		13662nd
Primes		17979th
Pythagorean primes		8975th
Ulam primes		1289th
Roman numberals
Base 2	110000110011110000₂	110000110011110001₂
Base 3	101011020110₃	101011020111₃
Base 4	300303300₄	300303301₄
Base 5	22344140₅	22344141₅
Base 6	4141320₆	4141321₆
Base 7	1461600₇	1461601₇
Base 8	606360₈	606361₈
Base 9	334213₉	334214₉
Base 10	199920₁₀	199921₁₀
Base 11	127226₁₁	127227₁₁
Base 12	97840₁₂	97841₁₂
Base 13	6ccc6₁₃	6ccc7₁₃
Base 14	52c00₁₄	52c01₁₄
Base 15	3e380₁₅	3e381₁₅
Base 16	30cf0₁₆	30cf1₁₆