1,420,309

11 × 129119

Starting at 1,420,309, the Collatz iteration reaches 1 after 62 steps. The first transition is 4260928; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 11 × 129119

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,549,440

Proper Divisor Sum 129,131

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #1420303 ← → #1420357

Radix Representation

Decimal	1420309
Binary	101011010110000010101 (21 bits)
Octal	0o5326025
Hexadecimal	0x15AC15

Divisor Catalog (4)

1 11 129,119 1,420,309

Collatz Trajectory (62 steps to reach 1)

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

1,420,309 4,260,928 2,130,464 1,065,232 532,616 266,308 133,154 66,577 199,732 99,866 49,933 149,800 74,900 37,450 18,725 56,176 28,088 14,044 7,022 3,511 10,534 5,267 15,802 7,901 23,704 11,852 5,926 2,963 8,890 4,445 13,336 6,668 3,334 1,667 5,002 2,501 7,504 3,752 1,876 938 469 1,408 704 352 176 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8

← Previous Integer #1,420,308 Browse Full Index Next Integer #1,420,310 →