1,782,421

157 × 11353

Starting at 1,782,421, the Collatz iteration reaches 1 after 70 steps. The first transition is 5347264; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 157 × 11353

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,793,932

Proper Divisor Sum 11,511

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #1782413 ← → #1782461

Radix Representation

Decimal	1782421
Binary	110110011001010010101 (21 bits)
Octal	0o6631225
Hexadecimal	0x1B3295

Divisor Catalog (4)

1 157 11,353 1,782,421

Collatz Trajectory (70 steps to reach 1)

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

1,782,421 5,347,264 2,673,632 1,336,816 668,408 334,204 167,102 83,551 250,654 125,327 375,982 187,991 563,974 281,987 845,962 422,981 1,268,944 634,472 317,236 158,618 79,309 237,928 118,964 59,482 29,741 89,224 44,612 22,306 11,153 33,460 16,730 8,365 25,096 12,548 6,274 3,137 9,412 4,706 2,353 7,060 3,530 1,765 5,296 2,648 1,324 662 331 994 497 1,492 746 373 1,120 560 280 140 70 35 106 53

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