Compare 217980 vs 217981

Property	217980	217981
Type	composite number	prime
Unique factors	5	1
Total factors	7	1
Prime factorization	2² × 3² × 5¹ × 7¹ × 173¹	217981¹
Prime factorization	2 × 2 × 3 × 3 × 5 × 7 × 173	217981
Divisors count	72	2
Divisors	1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 173, 180, 210, 252, 315, 346, 420, 519, 630, 692, 865, 1038, 1211, 1260, 1557, 1730, 2076, 2422, 2595, 3114, 3460, 3633, 4844, 5190, 6055, 6228, 7266, 7785, 10380, 10899, 12110, 14532, 15570, 18165, 21798, 24220, 31140, 36330, 43596, 54495, 72660, 108990, 217980	1, 217981
Number of properties	0	5
Chen primes		8109th
Harmonic primes		7292nd
Primes		19443rd
Pythagorean primes		9702nd
Twin primes (2nd member)		2312th
Roman numberals
Base 2	110101001101111100₂	110101001101111101₂
Base 3	102002000100₃	102002000101₃
Base 4	311031330₄	311031331₄
Base 5	23433410₅	23433411₅
Base 6	4401100₆	4401101₆
Base 7	1565340₇	1565341₇
Base 8	651574₈	651575₈
Base 9	362010₉	362011₉
Base 10	217980₁₀	217981₁₀
Base 11	139854₁₁	139855₁₁
Base 12	a6190₁₂	a6191₁₂
Base 13	782a9₁₃	782aa₁₃
Base 14	59620₁₄	59621₁₄
Base 15	448c0₁₅	448c1₁₅
Base 16	3537c₁₆	3537d₁₆