λ
Sequence Observatory

1,383,013

23 × 157 × 383
Deficient Odd Composite

Starting at 1,383,013, the Collatz iteration reaches 1 after 80 steps. The first transition is 4149040; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 23 × 157 × 383
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 1,456,128
Proper Divisor Sum 73,115
Digit Sum / Digital Root 19 (Root: 1)
Adjacent Primes #1382999 ← → #1383037

Radix Representation

Decimal 1383013
Binary 101010001101001100101 (21 bits)
Octal 0o5215145
Hexadecimal 0x151A65

Divisor Catalog (8)

1 23 157 383 3,611 8,809 60,131 1,383,013

Collatz Trajectory (80 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,383,013 4,149,040 2,074,520 1,037,260 518,630 259,315 777,946 388,973 1,166,920 583,460 291,730 145,865 437,596 218,798 109,399 328,198 164,099 492,298 246,149 738,448 369,224 184,612 92,306 46,153 138,460 69,230 34,615 103,846 51,923 155,770 77,885 233,656 116,828 58,414 29,207 87,622 43,811 131,434 65,717 197,152 98,576 49,288 24,644 12,322 6,161 18,484 9,242 4,621 13,864 6,932 3,466 1,733 5,200 2,600 1,300 650 325 976 488 244

More profiles

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