Compare 661138 vs 661139

Property661138661139
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization21 × 33056916611391
Prime factorization2 × 330569661139
Divisors count42
Divisors1, 2, 330569, 6611381, 661139
Number of properties14
Chen primes 20993rd
Isolated primes 42080th
Primes 53661st
Safe primes 3099th
Semiprimes141464th 
Roman numberals  
Base 2101000010110100100102101000010110100100112
Base 31020120220121310201202201223
Base 42201122102422011221034
Base 513212402351321240245
Base 6221004546221004556
Base 75422342754223437
Base 82413222824132238
Base 91216817912168189
Base 106611381066113910
Base 114117a5114117a611
Base 1227a72a1227a72b12
Base 131a1c0a131a1c0b13
Base 14132d2214132d2314
Base 15d0d5d15d0d5e15
Base 16a169216a169316
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