158,921

7 × 73 × 311

Starting at 158,921, the Collatz iteration reaches 1 after 77 steps. The first transition is 476764; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 7 × 73 × 311

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 184,704

Proper Divisor Sum 25,783

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #158909 ← → #158923

Radix Representation

Decimal	158921
Binary	100110110011001001 (18 bits)
Octal	0o466311
Hexadecimal	0x26CC9

Divisor Catalog (8)

1 7 73 311 511 2,177 22,703 158,921

Collatz Trajectory (77 steps to reach 1)

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

158,921 476,764 238,382 119,191 357,574 178,787 536,362 268,181 804,544 402,272 201,136 100,568 50,284 25,142 12,571 37,714 18,857 56,572 28,286 14,143 42,430 21,215 63,646 31,823 95,470 47,735 143,206 71,603 214,810 107,405 322,216 161,108 80,554 40,277 120,832 60,416 30,208 15,104 7,552 3,776 1,888 944 472 236 118 59 178 89 268 134 67 202 101 304 152 76 38 19 58 29

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