Compare 661139 vs 661145

Property661139661145
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization661139151 × 1322291
Prime factorization6611395 × 132229
Divisors count24
Divisors1, 6611391, 5, 132229, 661145
Number of properties41
Chen primes20993rd 
Isolated primes42080th 
Primes53661st 
Safe primes3099th 
Semiprimes 141466th
Roman numberals  
Base 2101000010110100100112101000010110100110012
Base 31020120220122310201202202123
Base 42201122103422011221214
Base 513212402451321240405
Base 6221004556221005056
Base 75422343754223527
Base 82413223824132318
Base 91216818912168259
Base 106611391066114510
Base 114117a61141180111
Base 1227a72b1227a73512
Base 131a1c0b131a1c1413
Base 14132d2314132d2914
Base 15d0d5e15d0d6515
Base 16a169316a169916
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