Compare 621989 vs 621997

Property	621989	621997
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	23¹ × 27043¹	621997¹
Prime factorization	23 × 27043	621997
Divisors count	4	2
Divisors	1, 23, 27043, 621989	1, 621997
Number of properties	1	3
Isolated primes		39780th
Left-truncatable primes		524th
Primes		50759th
Semiprimes	133365th
Roman numberals
Base 2	10010111110110100101₂	10010111110110101101₂
Base 3	1011121012122₃	1011121012221₃
Base 4	2113312211₄	2113312231₄
Base 5	124400424₅	124400442₅
Base 6	21155325₆	21155341₆
Base 7	5200244₇	5200255₇
Base 8	2276645₈	2276655₈
Base 9	1147178₉	1147187₉
Base 10	621989₁₀	621997₁₀
Base 11	395345₁₁	395352₁₁
Base 12	25bb45₁₂	25bb51₁₂
Base 13	18a154₁₃	18a15c₁₃
Base 14	12295b₁₄	122965₁₄
Base 15	c445e₁₅	c4467₁₅
Base 16	97da5₁₆	97dad₁₆