Compare 161910 vs 161921

Property	161910	161921
Type	composite number	prime
Unique factors	5	1
Total factors	6	1
Prime factorization	2¹ × 3² × 5¹ × 7¹ × 257¹	161921¹
Prime factorization	2 × 3 × 3 × 5 × 7 × 257	161921
Divisors count	48	2
Divisors	1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 257, 315, 514, 630, 771, 1285, 1542, 1799, 2313, 2570, 3598, 3855, 4626, 5397, 7710, 8995, 10794, 11565, 16191, 17990, 23130, 26985, 32382, 53970, 80955, 161910	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	100111100001110110₂	100111100010000001₂
Base 3	22020002200₃	22020010002₃
Base 4	213201312₄	213202001₄
Base 5	20140120₅	20140141₅
Base 6	3245330₆	3245345₆
Base 7	1243020₇	1243034₇
Base 8	474166₈	474201₈
Base 9	266080₉	266102₉
Base 10	161910₁₀	161921₁₀
Base 11	100711₁₁	100721₁₁
Base 12	79846₁₂	79855₁₂
Base 13	58908₁₃	58916₁₃
Base 14	43010₁₄	4301b₁₄
Base 15	32e90₁₅	32e9b₁₅
Base 16	27876₁₆	27881₁₆