Compare 161920 vs 161921

Property	161920	161921
Type	composite number	prime
Unique factors	4	1
Total factors	10	1
Prime factorization	2⁷ × 5¹ × 11¹ × 23¹	161921¹
Prime factorization	2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 23	161921
Divisors count	64	2
Divisors	1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 92, 110, 115, 128, 160, 176, 184, 220, 230, 253, 320, 352, 368, 440, 460, 506, 640, 704, 736, 880, 920, 1012, 1265, 1408, 1472, 1760, 1840, 2024, 2530, 2944, 3520, 3680, 4048, 5060, 7040, 7360, 8096, 10120, 14720, 16192, 20240, 32384, 40480, 80960, 161920	1, 161921
Number of properties	0	5
Chen primes		6329th
Harmonic primes		5564th
Primes		14844th
Pythagorean primes		7400th
Twin primes (1st member)		1821st
Roman numberals
Base 2	100111100010000000₂	100111100010000001₂
Base 3	22020010001₃	22020010002₃
Base 4	213202000₄	213202001₄
Base 5	20140140₅	20140141₅
Base 6	3245344₆	3245345₆
Base 7	1243033₇	1243034₇
Base 8	474200₈	474201₈
Base 9	266101₉	266102₉
Base 10	161920₁₀	161921₁₀
Base 11	100720₁₁	100721₁₁
Base 12	79854₁₂	79855₁₂
Base 13	58915₁₃	58916₁₃
Base 14	4301a₁₄	4301b₁₄
Base 15	32e9a₁₅	32e9b₁₅
Base 16	27880₁₆	27881₁₆