Compare 20972 vs 20981

Property	20972	20981
Type	composite number	prime
Unique factors	3	1
Total factors	5	1
Prime factorization	2² × 7² × 107¹	20981¹
Prime factorization	2 × 2 × 7 × 7 × 107	20981
Divisors count	18	2
Divisors	1, 2, 4, 7, 14, 28, 49, 98, 107, 196, 214, 428, 749, 1498, 2996, 5243, 10486, 20972	1, 20981
Number of properties	0	5
Chen primes		1161st
Good primes		265th
Primes		2359th
Pythagorean primes		1172nd
Twin primes (1st member)		357th
Roman numberals
Base 2	101000111101100₂	101000111110101₂
Base 3	1001202202₃	1001210002₃
Base 4	11013230₄	11013311₄
Base 5	1132342₅	1132411₅
Base 6	241032₆	241045₆
Base 7	115100₇	115112₇
Base 8	50754₈	50765₈
Base 9	31682₉	31702₉
Base 10	20972₁₀	20981₁₀
Base 11	14836₁₁	14844₁₁
Base 12	10178₁₂	10185₁₂
Base 13	9713₁₃	971c₁₃
Base 14	7900₁₄	7909₁₄
Base 15	6332₁₅	633b₁₅
Base 16	51ec₁₆	51f5₁₆