Compare 660649 vs 660661

Property	660649	660661
Type	composite number	prime
Unique factors	4	1
Total factors	4	1
Prime factorization	11¹ × 19¹ × 29¹ × 109¹	660661¹
Prime factorization	11 × 19 × 29 × 109	660661
Divisors count	16	2
Divisors	1, 11, 19, 29, 109, 209, 319, 551, 1199, 2071, 3161, 6061, 22781, 34771, 60059, 660649	1, 660661
Number of properties	0	3
Centered decagonal primes		153rd
Primes		53621st
Twin primes (2nd member)		5785th
Roman numberals
Base 2	10100001010010101001₂	10100001010010110101₂
Base 3	1020120020111₃	1020120020221₃
Base 4	2201102221₄	2201102311₄
Base 5	132120044₅	132120121₅
Base 6	22054321₆	22054341₆
Base 7	5421043₇	5421061₇
Base 8	2412251₈	2412265₈
Base 9	1216214₉	1216227₉
Base 10	660649₁₀	660661₁₀
Base 11	4113a0₁₁	411401₁₁
Base 12	27a3a1₁₂	27a3b1₁₂
Base 13	1a1922₁₃	1a1931₁₃
Base 14	132a93₁₄	132aa1₁₄
Base 15	d0b34₁₅	d0b41₁₅
Base 16	a14a9₁₆	a14b5₁₆