1,355,290

2 × 5 × 313 × 433

Starting at 1,355,290, the Collatz iteration reaches 1 after 85 steps. The first transition is 677645; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 313 × 433

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,452,968

Proper Divisor Sum 1,097,678

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #1355281 ← → #1355293

Radix Representation

Decimal	1355290
Binary	101001010111000011010 (21 bits)
Octal	0o5127032
Hexadecimal	0x14AE1A

Divisor Catalog (16)

1 2 5 10 313 433 626 866 1,565 2,165 3,130 4,330 135,529 271,058 677,645 1,355,290

Collatz Trajectory (85 steps to reach 1)

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

1,355,290 677,645 2,032,936 1,016,468 508,234 254,117 762,352 381,176 190,588 95,294 47,647 142,942 71,471 214,414 107,207 321,622 160,811 482,434 241,217 723,652 361,826 180,913 542,740 271,370 135,685 407,056 203,528 101,764 50,882 25,441 76,324 38,162 19,081 57,244 28,622 14,311 42,934 21,467 64,402 32,201 96,604 48,302 24,151 72,454 36,227 108,682 54,341 163,024 81,512 40,756 20,378 10,189 30,568 15,284 7,642 3,821 11,464 5,732 2,866 1,433

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