Compare 640990 vs 640991

Property	640990	640991
Type	composite number	semiprime
Unique factors	4	2
Total factors	4	2
Prime factorization	2¹ × 5¹ × 7¹ × 9157¹	13¹ × 49307¹
Prime factorization	2 × 5 × 7 × 9157	13 × 49307
Divisors count	16	4
Divisors	1, 2, 5, 7, 10, 14, 35, 70, 9157, 18314, 45785, 64099, 91570, 128198, 320495, 640990	1, 13, 49307, 640991
Number of properties	0	1
Semiprimes		137347th
Roman numberals
Base 2	10011100011111011110₂	10011100011111011111₂
Base 3	1012120021101₃	1012120021102₃
Base 4	2130133132₄	2130133133₄
Base 5	131002430₅	131002431₅
Base 6	21423314₆	21423315₆
Base 7	5306530₇	5306531₇
Base 8	2343736₈	2343737₈
Base 9	1176241₉	1176242₉
Base 10	640990₁₀	640991₁₀
Base 11	3a8649₁₁	3a864a₁₁
Base 12	26ab3a₁₂	26ab3b₁₂
Base 13	1959ac₁₃	1959b0₁₃
Base 14	129850₁₄	129851₁₄
Base 15	c9dca₁₅	c9dcb₁₅
Base 16	9c7de₁₆	9c7df₁₆